Treat the number of months X after January 1that someone is born as uniformly distributedfrom 0 to 12. Round all answers to 4 decimalplaces where possible.a. What is the distribution of X? X - U(b. Suppose that 39 people are surveyed.What is the distribution of x for thissample? - N(xc. What is the probability that theaverage birth month of the 39 peoplewill be more than 6.3?

The number of months X after January 1 that someone is born as follows uniform distribution from 0…

Answered: Treat the number of months X after…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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D
The average American gets a haircut every 44 days. Is the average smaller for college students? The data below shows the results of a survey of 20 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 43, 44, 49, 47, 32, 38, 30, 40, 45, 48, 34, 37, 48, 37, 35, 42, 42, 31, 40, 50 Copy to clipboard What can be concluded at the = 0.10 level of significance? a For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?vSelect an answer H1: ?vSelect ap answer c. The test statistic (please show your answer to 3 decimal v = places.) d. The p-value - (Please show your answer to 4 decimal places.) e. The p-value is ? v a f. Based on this, we should Select an answer v the null hypothesis. g. Thus, the conclusion is that... Select an answer Select an answer At the 10% significance level, the data suggest there is sufficient evidence that p lower than 44 At the 10% significance level,…
Please answer D, E, H & I.
The median of the following distribution is 6.5, where a, b, c, d and e are positive integers. Data 5 6 7 8 9 Frequency a b c d e The four data 6,7,8 and 9 are now inserted to the distribution. Find the median of the distribution thus obtained.
Reading scores. The grade-level reading scores from a reading test given to a random sample of 12 students in an urban high school graduating class are: 7 7 13 12 8 14 11 14 12 14 15 15 a. Find the mean of the reading scores. ______. (Type an integer or a decimal. Round to two decimal places.)
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Let’s say there were only 4 people who took the midterm. Their scores were: 60 70 80 90. a. Take a sample of any 2 of the scores. Find the mean of your sample b. Figure out all of the possible samples of size 2. Calculate a mean for each sample of 2 c.Make a dot plot using each of the means you found in #2.
The variability of the scores in a sample tends to be _____ the variability of the scores in the population from which the sample was obtained. a. unrelated to b. larger than c. exactly the same as d. smaller than
The average American gets a haircut every 44 days. We want to know if the average is larger for college students. The data below shows the results of a survey of 12 college students asking them how many days elapse between haircuts. Assume that the distribution of the population is normal. 44, 45, 31, 42, 39, 46, 49, 50, 41, 42, 36, 36 The null and alternative hypotheses would be: Ho: ?V Select an answer Ha: ? Select an answer V
26
The table below shows the probability distribution of job satisfaction scores (1 - 4) for a group of senior executives. A score of 1 indicates a strong dissatisfaction with their jobs; a score of 4 indicates a strong satisfaction with their jobs.Note that you must complete both parts a. and b. to receive any marks for the remaining parts of this question.a. Complete the missing value in the following table. Round to at least FIVE decimals if necessary. Job Satisfaction Score Probability of Score 1 0.2 2 3 0.27 4 0.26 b. What is the expected job satisfaction score for this group of senior executives?Answer: Do NOT round your answer!c. What is the standard deviation of the job satisfaction score for this group of senior executives?Answer: Round to at least FIVE decimals if necessaryd. Suppose a senior executive expects to earn an additional 4350 dollars per year for each job satisfaction score point. The executive also will receive a fixed 250 dollar yearly raise and…
One graph in the figure represents a normal distribution with mean u = 7 and standard deviation o = 1. The other graph represents a normal distribution with mean u = 12 and standard deviation o = 1. Determine which graph is which and explain how you know. 12 Choose the correct answer below. O A. Graph A has a mean of u = 12 and graph B has a mean of u =7 because larger mean shifts the graph to the left. O B. Graph A has a mean of u = 12 and graph B has a mean of u =7 because a larger mean shifts the graph to the right. O C. Graph A has a mean of u = 7 and graph B has a mean of u = 12 because a larger mean shifts the graph to the left. O D. Graph A has a mean of u = 7 and graph B has a mean of u = 12 because a larger mean shifts the graph to the right.

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