QUESTION 30 The waiting time (in minutes) of customers at a fast food outlet is normally distributed. A random sample of 16 customers is selected and the 99% confidence interval for the population mean waiting time is obtained as (1.95,2.64). Find the standard deviation used to construct the 99% confidence interval. Round your answer to two decimal places.

Q: From the provided control charts, subgroup sizes, and specification limits, calculate the process…

A: Given      X bar -R chart of process A         n=5    LSL=140   USL=160 and     X bar -S chart of…

Q: A sample of 19 joint specimens of a particular type gave a sample mean proportional limit stress of…

A: From given data we have : n=19 x=8.55 s=0.72

Q: A study investigated the therapeutic effectiveness of mindfulness versus traditional cognitive…

A: given data  sp2 = 16.636n1 = 12n2 = 12se = ?

Q: A psychologist is interested in the mean IQ score of a given group of children. It is known that the…

A: Given  Sample mean x̄=110, n=sample size=50  Standard deviations σ=11

Q: From the table below, solve the following. b. Find mean of x [Select] X c. Find the mean of y…

A: Pearson Correlation Coefficient is denoted as 'r' and it is computed as below…

Q: QUESTION 9 A survey of 18 adults in UAE found that the mean age for a person's primary vehicle is…

A:

Q: J 1. In 2007, the Boston Red Sox won the World Series for the second time in 4 years. Table below…

A: Given that: Player Salary ($) Josh Beckett 6666667 Alex Cora 2000000 Coco Crisp 3833333…

Q: Find the probability of the indicated event if P(E) = 0.35 and P(F) = 0.50. Find P(E or F) if P(E…

A: given data P(E) = 0.35P(F) = 0.50P(E∩F) = 0.20P(E∪F) = ?

Q: Suppose you are comparing seven groups in an ANOVA, and your result is significant. You want to…

A: Given information, Number of groups to be compared is 7. It is given that the ANOVA results are…

Q: Leo Lucky, owner of a Pizza Hut franchise, bought a delivery truck for $30,000. The truck has an…

A: Given that, Leo Lucky, owner of a Pizza Hut franchise, bought a delivery truck for $30,000. The…

Q: Fruits and vegetables are difficult crops to maintain due to all of the potential natural consumers…

A: Given Information: Consider the given dataset:   CHEM 1 CHEM 2 CHEM 3 CHEM 4 FRUIT X 85 85 79…

Q: 55. If X is normally distributed RV with mean 12 and SD 4.Find P [X ≤ 20].

A:

Q: Earlier this semester, we learned to use 2-Sample-TTest to compare the population means of two…

A: Given The data is as follows: Treatment One Treatment Two 5.6 3.4 4.7 2.3 3.6 4.4 3.9 3.5…

Q: Suppose that in a random selection of 100 colored candies, 23% of them are blue. The candy company…

A: given data, n=100claim :p=0.21α=0.05n=100p^=0.23

Q: Let the sample space be S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10). Suppose the outcomes are equally…

A: given data, s={1,2,3,4,5,6,7,8,9,10}outcomes are equally likely we have to find out the given…

Q: 5.2. Give the estimated logistic regression decided upon and give the odds ratios for regression…

A: Given is the summary of logistic regression to predict the effectiveness of treatment (Y) based on…

Q: Here are the scores of 11 students on a science test. 65, 69, 69, 77, 79, 80, 81, 82, 85, 86, 93…

A:

Q: A study examined the effects of fatigue on driving performance. Based on the results, the…

A: Given that, a study examined the effects of fatigue on driving performance. Based on the results,…

Q: In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the…

A:

Q: why the cost of external equity is greater than the cost of internal equity?

A: Always the cost of external equity is greater than the internal equity due to the floating costs…

Q: On each trial of an experiment, a participant is presented with a constant soft noise that is…

A: Dear student, If you find this solution helpful please upvote it. The solution is given below:

Q: A man and his wife appear in an interview for two vacancies in the same post. The probability of…

A:

Q: Use the tabulated cumulative normal distribution (Table A.2 or the inside cover of Navidi) to find…

A: a) From the given graph, PZ<-1.175=0.1200, from the excel function, =NORM.DIST(-1.175,0,1,TRUE)

Q: Use a normal approximation to find the probability of the indicated number of voters. In this case,…

A: given data  p = 0.22 n = 131 P(x=32) = ? use normal approximation of binomial distribution.

Q: Suppose you want to check whether a coin is fair or not. You flip the coin 200 times and get 82…

A: Given n=200 X=82

Q: A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the…

A:

Q: a. What is the best point estimate of the population mean net change in LDL cholesterol after the…

A: From the provided information, Sample size (n) = 43 Sample mean (x̄) = 3.7 Sample standard deviation…

Q: A random sample of the closing stock prices in dollars for a company in a recent year is listed…

A: Given data is…

Q: Let the sample space be S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10). Suppose the outcomes are equally…

A: Solution-: Given: Sample space =S={1,2,3,4,5,6,7,8,9,10} Let, Event E=An even number less than 7 We…

Q: S and Sy [Select] Pearson Correlation Coefficient (r): [Select] = Regression line equation: [Select]…

A: By bartleby policy i can gives only 3 subparts at a time

Q: A random sample of 50 light bulbs had a mean lifetime of 590 hours. A 97% confidence interval for…

A: From the provided information, Sample size (n) = 50 Sample mean = 590 Confidence level = 97%

Q: Find the sample size needed to estimate the mean age of movie patrons such that it can be said with…

A: Here, Confidence level is 0.98, E= 2, and σ=19.3. Thus, α=0.02=1-0.98.

Q: The undrained shear strength of a clay has a mean value of 44.85 kN/m² and a standard deviation of…

A:

Q: A new app is being tested to see if it can increase the number of college students who meet with a…

A: The current rate for the population is 0.27.

Q: A survey of 200 senior citizens was undertaken and it was found that 26 of them had the flu vaccine…

A:

Q: If X is a Normal R.V with mean zero and variance o Find the p.d.f of Y=e*.

A:

Q: Define nth Moments about Origin

A: In probability theory, moments about origin refers to the raw moments.  From various moments of a…

Q: A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed…

A: Given data is 0.51,0.68,0.10,0.90,1.33,0.55,0.86sample size(n)=7confidence level=98%

Q: Question 1 The income of farmers depends on various factors. To predict the income of the next year,…

A: Given Information: Consider the given information in which the dependent variable is Income and the…

Q: ← Suppose you toss a coin 100 times and get 89 heads and 11 tails. Based on these results, what is…

A: toss a coin 100 times  the results are : 89 heads and 11 tails ' P(next toss will be head) = ?

Q: I 3. a. N= Group 1 (Pre-Ultima) b. Mean₁= 60 45 45 68 62 70 59 60 44 47 Group 2 (Post-Ultima)…

A:

Q: The accompanying data are​ drive-through service times​ (seconds) recorded at a fast food restaurant…

A:

Q: This problem is inspired by a study of the “gender gap” in earnings in top corporate jobs. The study…

A: Given information: The output of simple linear regression is given.

Q: 18. A sample of scores has a mean of M following. a. A constant value of 3 is added to each score.…

A:

Q: Let the sample space be S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10). Suppose the outcomes are equally…

A: given data sample space s : {1,2,3,4,5,6,7,8,9,10}equally likely outcomesE : even number less than 7…

Q: In which of the following situations we can not construct a confidence interval for the population…

A: Solution:  a)Given information: x= 97 Successes n= 100 Sample size  y= n-x =3 failures

Q: In a charity show tickets numbered consecutively from 101 through 350 are placed in a box. What is…

A:

Q: C1. A computer spam filter is 98% effective at sending spam emails to my junk folder, but will also…

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

Q: The following data lists the ages of a random selection of actresses when they won an award in the…

A: The data shows the ages of Actrees and actors.

Q: 7.38 Food intake and weight gain. If we increase our food intake, we generally gain weight.…

A: Given the data as Weight before Weight after 55.7 61.7 54.9 58.8 59.6 66 62.3 66.2 74.2…