A sample of n = 10 scores has a mean of 20.  A person with a score of 1 is replaced with a person who has a score of 31.  Find the new mean. a.31 b.17 c.21 d.23

Q: Hurricane Andrew swept through southern Florida causing billions of dollars of damage. Because of…

A: n=22, sample mean X̄=24500, s=4100, population mean μ=23000

Q: Assume that when human resource managers are randomly selected, 37% say job applicants should follow…

A:

Q: Question 3 A fruit farmer has a large number of almond trees, all of the same variety and the same…

A: given  the weights of almonds are given Weights(kg): 36,53,78,67,92,77,59,66

Q: a. What is the probability of having the disease given that you test positive? (4 Decimal places as…

A: The population of size 100,000 is known to have a certain disease by which 6% of the population is…

Q: A random sample of 46 adult coyotes in a region of northern Minnesota showed the average age to be x…

A: x¯=2.05, s=0.79, n=46, μ=1.75, and α=0.01

Q: Question 15 Complete the following statements. In general, % of the values in a data set lie at or…

A: Here if we say Xth percentile it means below that the point X% of data lies

Q: In 1945, an organization asked 1521 randomly sampled American citizens, "Do you think we can develop…

A: X= 821 n= 1521 Proportion of citizens responded yes (p) = 821/1521 = 0.5398   Null and Alternate…

Q: Use Adamss's method of apportionment to solve the following problem. 1. Suppose a nation has 6…

A: Some methods are used to assign seats under approximation. They are : Jefferson's method, Adam's…

Q: Match each scatterplot shown below with one of the four specified correlations. O 8 COO COCOCODO O…

A: The scatterplots are given. To match each scatterplot with the correlations.

Q: To determine the relative effectiveness of different study strategies for the SAT, suppose three…

A: Hypothesis is an assumption that is being tested.

Q: Find the sample mean for the given data set, 45,34,67,89,24

A: Answer: From the given data, 45,34,67,89,24 Sample size(n) = 5

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: Confidence interval (0.761,0.785)

Q: Find the 5 number summary for the data shown below. 52 8 94 41 62 76 13 79 90 6 5 number summary:

A: 94,41,62,76,13,52,8,79,90,6 sample size(n)=10 Arrange the data in ascending order…

Q: For the following data sets A and B, find the mean, median and mode. Use Excel built In functions…

A: We have given the data sets A and B A     B 58     0.38 22     0.55 27     2.54 29…

Q: Assume that different groups of couples use a particular method of gender selection and each couple…

A: From the provided information, The probability of a girl is 0.5 that is p = 0.5 Assume that the…

Q: ative cars among residence of two neighboring cities differ. In order to est, the researcher…

A: Sample sizes n1=185  , n2=195 Favorable cases x1=75 , x2=68

Q: A newsgroup is interested in constructing a 90% confidence interval for the difference in the…

A: sample size(n1)=522 x1=416 sample size(n2)=571 x2=461 confidence level=90% sample…

Q: The manager of a local specialty store is concerned with a possible slowdown in payments by her…

A: Sample size, n=25 Sample mean, x¯=54 Sample standard deviation, s=8

Q: 6) In a company there are 10 executives: 6 women and 4 men. 4 are selected to attend a management…

A: 6- women 4-men 10- total members .4 are selected to attend management seminar. p(select 3 men and 1…

Q: b. Test the claim by constructing an appropriate confidence interval. The 90% confidence interval is…

A: Sample 1(treatment with oxygen): n1 = 153 x1 = 115 Sample 2(treatment with placebo): n2 =160 x2 =…

Q: In a random sample of 100 audited estate tax returns, it was determined that the mean amount of…

A: sample size(n)=100 sample mean(x¯)=$3448 standard deviation(s)=$2520 degrees of freedom(df)=n-1…

Q: 3 3 The brain volumes (cm) of 20 brains have a mean of 1073.7 cm and a standard deviation of 125.3…

A: From the provided information, Mean = 1073.7 cm3 Standard deviation = 125.3 cm3

Q: Complete the following statements. In general, % of the values in a data set lie at or below the…

A: The lower quartile(Q1) is a value below which 25% of the observations lies and above which 75% of…

Q: a study of 850 homeowners in a certain area showed that the average value of the homes was $83,000,…

A: Answer: From the given data, Mean (μ) = 83000 Standard deviation(σ) = 5100 Sample size(n) = 45 X…

Q: 7 8 9 10 data 11 12 13 14 a Based on the boxplot above, identify the 5 number summary

A: Given Using box plot: minimum value =7 maximum value =14 Quartile [Q1] =8 Quartile [Q2] =10 Quartile…

Q: f X is a uniformly distributed random varibale with a=9 and b=16, then Calculate the…

A: Answer: From the given data, X follows uniform distribution, a = 9   and   b = 16

Q: How do I find P-value using z score?

A: P-value from Z-score

Q: Assume that random guesses are made for 7 ​multiple-choice questions on a test with 5 choices for…

A: Sample size (n)=7 Multiple Choice questions with 5 choices we have to find the probability that no…

Q: The confidence interval was (36,45) What was the margin of error? What was the point estimate

A: Answer: From the given data, The confidence interval = (36,45)

Q: The slope of the regression line, y = 21 − 5x, is 5.   Group of answer choices True False

A: We have given that y = 21 − 5x

Q: In a previous year, 51% of females aged 15 and older lived alone. A sociologist tests whether this…

A: The question is about hypo. testing Given : Popl. prop. of females aged 15 and older who lined alone…

Q: Claim: Fewer than 94% of adults have a cell phone. In a reputable poll of 1173 adults, 88% said that…

A: Answer: From the given data, Claim: Fewer than 94% of adults have a cell phone Population proportion…

Q: Which of the following should be true to make sure that theta is an estimator of theta(unbiased)?

A: The unknown value of the population parameter is estimated using an estimator. It explains some…

Q: In a 2012 report from the U.S. Department of Education breaking down the race and gender of every…

A: Given the data table for White, Black and Hispanics

Q: Guidelines for the Jolly Blue Giant Health Insurance Company claim that the average hospitalization…

A: Sample size n =16 Sample mean=20 Standard deviation =20

Q: The mortality rate from melanoma (skin cancer) during the 1950s was recorded for each of the 48…

A: A scatterplot for the latitude of the state and melanoma mortality rate is given.

Q: ind the sample mean for the given data set, 25,64,38,76,48

A: Answer: From the given data, 25,64,38,76,48 Sample size(n) = 5

Q: Express the indicated degree of likelihood as a probability value between 0 and 1. When using a…

A: The number of favorable outcomes is 1. That is getting zero. The total number of outcomes is 10.…

Q: The International Air Transport Association surveys business travelers to develop quality ratings…

A: The data shows 50 business travelers asked to provide a rating for the airport.

Q: Five pulse rates are randomly selected from a set of measurements. The five pulse rates have a mean…

A: The five pulse rates have a mean of 64.0 beats per minute. Four of the pulse rates are 50, 61, 59,…

Q: 39. Assume the weights of offensive linemen in the NFL follow a normal distribution with a mean of…

A: According to guidlines we are supposed to solve 1st three subpart only rest can be resubmitted

Q: Use the computer output to estimate the intercept B and the slope B₁. The regression equation is Y =…

A: Predictor Coef SE Coef T P Constant 808.131 87.84 9.20 0.000 X -3.705 1.215 -3.05 0.006

Q: An environmentalist wishes to conduct a hypothesis test on the percentage of cars driven in the city…

A: Sample size(n)=143 Population proportion(P)=0.04 q=1-p q=1-0.04=0.96

Q: When examaning the correlation, scatter plots, lines of best-fit and causality, how do these special…

A: Correlation: Correlation refers to the statistical relationship between two variables. It measures…

Q: Assume that 2000 births are randomly selected and 1981 of the births are girls. Use subjective…

A: Sample size (n)=2000 Number of girls (X)=1981 We have to find whether the number of girls are…

Q: Bobby randomly selects 138 subscribers of Stingray Karaoke on YouTube and asked how much time they…

A: Sample size(n)=138 sample mean(x¯)=3.63 Population standard deviation(σ)=2.01…

Q: Which of the following are the appropriate null and alternative hypotheses?

A: here given ,  Rainfall and corn crop yield reported for the 38 years from 1890 through 1927 give us…

Q: 32. 2. The test​ statistic,is ______ ​(Round to two decimal places as​ needed.) 3. The​ P-value…

A: Hello! As you have posted 6 sub-parts, we are answering the first 3 sub-parts.  In case you require…

Q: (a) If you have no preliminary estimate for p, how many medical files should you include in a random…

A: here in part a)  MOE = 0.03 and confidence level = 92%  and in part b) given x = 12 , n = 82

Q: The data shown was generated by suspending weights, whose mass is measured in kg, from a rubber…

A: The number of observations is n = 13. The independent variable is mass (x) and the dependent…