ONLY need D and E

Q: Suppose that X is a random variable with mean 30 and standard deviation 4. Y is a random variable…

A: The standard deviation of X is 4 and standard deviation of Y is 8.

Q: A company set up a kiosk in the Mall of America for several hours and asked randomly selected people…

A: Given that    Age less than 21 Age 21 or greater  Total  White 10 5 15 Black  20 50 70 Lime…

Q: Below is a frequency distribution of the number of goals made in each game from a past season of the…

A: Given data is  No. of goals in game Frequency 0 1 1 7 2 1 3 4 4 5 5 0 6 0 7 2…

Q: hich of the following is data that you would analyze using a cross-tabulation and chi square? -The…

A: given that  Which of the following is data that you would analyze using a cross-tabulation and chi…

Q: Male (M) Female (F) Total Color-Blind (C) Not Color - Blind C Total 45 108 14 67 59 175 63 53 116 A…

A: P(A given B) = P(A|B) = P(A and B)/P(B) Total = 175 Male = 108 Female=67 Colour blind=116 Not colour…

Q: Below are four bivariate data sets and their scatter plots. (Note that all of the scatter plots are…

A: Given: There are four figures of the Scatter plot given.

Q: Indicate the scale of measurement of the following variables:   iv. Marital status v. Weight (in…

A: Scale of measurements: Nominal : name(categories) Ordinal :  ordered categories (name + ranking)…

Q: Express the confidence interval 33.1%±9% in interval form. Express the answer in decimal format…

A: Given 33.1%±9%

Q: The data set provides measurements of 5 different samples.  Answer the following questions if you…

A: From the given data set we find the value of X bar for every sample:  X bar=ΣXi/k  Range of Sample…

Q: a. Given that the water taxi was rated for a load limit of 3500 lb, what is the maximum mean weight…

A: It is given that  Mean, μ = 181 Standard deviation, σ = 38

Q: Suppose the time a child spends waiting for the bus is exponentially distributed with mean 4…

A:

Q: Rolling a fair twelve-sided die produces a uniformly distributed set of numbers between 1 and 12…

A: Given that  X ~ Uniform (1 , 12) Mean of X = 6.5 Standard deviation of X = 3.452 n = 144

Q: A data set includes data from student evaluations of courses. The summary statistics are n=89,…

A: It is given that, The sample size is 89. The sample mean is 3.58. The sample standard deviation is…

Q: In hundreds of studies with many thousands of participants, first-born children scored better than…

A: Solution: Given information: x1= 469  Sample mean of first born x2= 456  Sample mean of second born…

Q: According to Bayes Theorem, the probability of event A, given that event B has occurred, is as…

A: Given that  P(A) = 1/4 , P(A') = 3/4 , P(B/A) = 1/10 , P(B/A') = 7/10

Q: The claim is that for 11 AM body temperatures of females, the mean is less than 98.6°F. The sample…

A: Solution: Given information: n= 37 Sample size  Claim: For 11 AM the mean body temperature of…

Q: Refer to the accompanying​ table, which describes the number of adults in groups of five who…

A: Find mean and standard deviations V(X)=E(X2)-[E(X)]2

Q: What is the critical value?

A: It is given that the z-test for one population proportion test.

Q: a) What proportion of our sample will NOT be categorised as severely hypertensive? b) Suppose that…

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

Q: If the Pearson correlation is r= 0.9245, SSx= 490,692.44, and SSy = 339,559.64, what is the…

A: Given that  Pearson correlation is r= 0.9245, SSx= 490,692.44, and SSy = 339,559.64

Q: Assume that a randomly selected subject is given a bone density test. Those test scores are normally…

A: Given the test scores are normally distributed with mean=0 and standard deviation=1

Q: A correlation coefficient provides two pieces of information about a relationship between two…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: STEPS IN STATISTICAL HYPOTHESIS TESTING 1. Analyze the problem 2. Formulate the null and…

A: Given that, The teacher would like to know if the class will be able to absorb the lecture from a…

Q: The scatterplot below shows? -weak positive correlation -strong positive correlation -weak…

A: The scatterplot is given.

Q: 2 9.5 points eBook Print References For each value of d.f. look up the value of Student's t in…

A:

Q: Hi There. I need help with this stats question in Excel. I'm totally lost - I believe it relates to…

A: Given The average number of clicks per minute on the website =342 The number of seconds in a minute…

Q: 3 Z Jessica collected data on the number of pages in her mystery book collection. Below are…

A:

Q: The claim is that for 11 AM body temperatures of females, the mean is less than 98.6°F. The sample…

A: From the provided information, Sample size (n) = 37 The claim is that the mean is less than 98.6 F.…

Q: Can you please help with this question “Lampshells” are special shellfish animals with fossil…

A: Given Information: Consider the given dataset: Live Dead 22.34 24.93 18.72 16.56 17.64…

Q: go and a standard de K IQ scores are normally distributed with a mean are taken from a large…

A: Given that.   X~N( μ , ?)   μ=95     , ?=18

Q: Psychological and educational tests, including MMPI are often designed so they have a mean of 50 and…

A: Given: Mean μ=50 Standard deviation σ=10

Q: Given the R software output below, interpret the 90% confidence interval about the true mean…

A: Given that  90% C.I  (39.15228 , 47.36022)

Q: Find the area of the shaded region. The graph depicts the standard normal distribution of bone…

A:

Q: Suppose that the length X of the life (in years) of a battery for a computer has a distribution that…

A:

Q: Let X be the amount of time (in hours) the wait is to get a table at a restaurant. Suppose the cdf…

A:

Q: Find the margin of error for a poll, assuming that 95% confidence level and π = 0.3. n = 1,800…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: 4.37 What is the probability that the mean for a random sample of 144 accounts receivable drawn from…

A: Given that  Mean = 10000 , Standard deviation = 4000 Sample size = 144

Q: A corporation that maintains a large fleet of company cars for the use of its sales staff is…

A: The data shows the monthly distances in miles driven by a random sample of  12 sales people.

Q: example of a

A: When the sample size is small (<30), the central limit theorem does not assure us to assume that…

Q: A data set includes data from student evaluations of courses. The summary statistics are n=84, x=…

A: Givensample size(n)=84Mean(x)=3.84standard deviation(s)=0.61significance level(α)=0.10

Q: A study was conducted to determine the noise levels in urban hospitals. In a random sample of 84…

A: Given  90% CI for population mean (61.2±1.4179)

Q: et X be the amount of time (in hours) the wait is to get a table at a restaurant. Suppose the cdf is…

A: Given that  Cdf. F(x)= {0   x<0           {X3/64  , 0<=x<=4              0     , x>4

Q: (1) An airline finds that each passenger who reserves a seat fails to turn up with probability For…

A: Hello! As you have posted 2 different questions, we are answering the first question. In case you…

Q: The local animal shelter has kittens for adoption. There are 2 black, 3 grey, and 5 multi-colored…

A:

Q: Refer to the sample data for polygraph tests shown below. If one of the test subjects is randomly​…

A:

Q: 8. The p-value in hypothesis testing represents which of the following: Please select the best…

A: According to the given information in this question We need to identify the correct option

Q: the physics majors, six are minoring in math. Find the probability that a randomly selected student…

A: Let P =physics M=maths  n(M)=17, n(P)=14

Q: Is the average time to complete an obstacle course shorter when a patch is placed over the right eye…

A:

Q: sold 457,000 pencils each year. Furthermore, 90% of the time sales have been between 454,000 and…

A: It is given that  Mean, μ = 457000 P( 454000 < X < 460000 ) = 90% = 0.90

Q: K A media research group uses samples of 5000 households to rank TV shows. The group reported that a…

A: Given that  n = 5000 , p = 16% = 0.16