Part 2 of 5Find the critical value(s). Round the answer to two deamal places. If there is more than one crtical value, separate themwith commas.Critical value(s):Part: 2/5Part 3 of 5Compute the test value. Always round z score values to at least two decmal places.Part: 3/5Part 4 of 5Make the decision.(Choose ongDo not rejectRejectthe null hypothesis.Part: 4/5Part S of 5Summanze the results.There (Choose one) enough evidence to support the claim that the average expenditureper student has changed. Student Expenditures The average expenditure per student (based on average daily attendance) for a certain school year was$10,337 with a population standard deviation of $1560. A survey for the next school year of 135 randomly selected studentsresulted in a sample mean of $10,590. Do these results indicate that the average expenditure has changed? Use a=0.01.Part: 0/SPart 1 of 5State the hypotheses and identify the claim with the correct hypothesis.Ho: u(Choose one) s(Choose one)Hu (Choose one) s(Choose one)This hypothesis test is a (Choose one) test.Part: 1/5Part 2 of 5Find the critical value(s), Round the answer to two decimal places. If there is more than one cntical value, separate themSubmil Assignmwnt2032 MGr HLLC A s erved me of Ue Py Crder

From the provided information, Sample size (n) = 135 Sample mean (x̄) = 10590 Standard deviation (σ)…

Answered: Student Expenditures The average…

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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Exhibit 11-3 The contents of a sample of 26 cans of apple juice showed a standard deviation of 0.06 ounce. We are interested in testing to determine whether the variance of the population is significantly more than .003. Refer to Exhibit 11-3. The p-value for this test is a) .05 b) greater than .10 c) less than .10 d) 1.96
An insurance company is looking over accident statistics. They want to model the population of all drivers for the population parameter of the standard deviation and variance of the age of the driver involved in an automobile accident. They have a sample of 100 accidents from around the country. The age of the driver in each of these accidents is provided below. Use Excel to calculate the sample standard deviation and the sample variance. Round your answers to one decimal place. Do not round until you've calculated your final answer "Age of people in accident"48643346436728189044472440202747683248472248217347302918487364454920205066654187873417203176493089672222455023481746382942254720463119214227226621236675744621461969202048238851284918204522313823284939 Standard deviation: Variance:
Assume the samples are random and independent, the populations are nomally distributed, and the population variances are equal. The table available below shows the prices (in dollars) for a sample of automobile batteries. The prices are classified according to battery type. At a = 0.10, is there enough evidence conclude that at least one mean battery price is different from the others? Complete parts (a) through (e) below. E Click the icon to view the battery cost data. (a) Let u1. P2. H3 represent the mean prices for the group size 35, 65, and 24/24F respectively. Identify the claim and state Ho and H. H Cost of batteries by type The claim is the V hypothesis. Group size 35 Group size 65 Group size 24/24F 101 111 121 124 D 146 173 182 278 124 140 141 89 (b) Find the critical value, Fo, and identify the rejection region. 90 79 84 The rejection region is F Fo, where Fo = (Round to two decimal places as needed.) (c) Find the test statistic F. Print Done F= (Round to two decimal places as…
Determine the number of standard deviations from the mean (z-score). In the United States, the distribution of a male's height has a mean of 69 inches with a standard deviation of 3 inches. How many standard deviations from the mean is John Doe, who is 67 inches tall? Question 15 options: 0.67 standard deviations below the mean 0.33 standard deviations below the mean 2 standard deviations below the mean 1 standard deviation below the mean
Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P15, the 15th percentile. This is the bone density score separating the bottom 15% from the top 85%. How to get and what is the bone density score corresponding to P15 is ?
The mean weight of the eight-month-old baby is 17.75 pounds with standard deviation 1.225 pounds. The mean weights are approximately normal. Use Empirical Rule to summarize the data. Can we apply Empirical Rule to summarize the data in this problem? Ans: Then answer the following questions: Approximately ___ % of the eight-month-old babies weigh between and pounds. Approximately ___ % of the eight-month-old babies weigh between 15.3 and pounds. Approximately 99.7% of the eight-month-old babies weigh between and pounds.
Annual income: The mean annual income for people in a certain city (in thousands of dollars) is 41, with a standard deviation of 28. A pollster draws a sample of 92 people to interview. Answer the two following questions.
Standardized tests: In a particular year, the mean score on the ACT test was 22.3 and the standard deviation was 5.3. The mean score on the SAT mathematics test was 504 and the standard deviation was 100. The distributions of both scores were approximately bell-shaped. Round the answers to at least two decimal places. Find the z-score for an ACT score of 30.
Question: A study claims that the average amount of caffeine consumed by college students in a day is 200 milligrams. A sample of 50 students is taken, and their average caffeine consumption is found to be 210 milligrams with a standard deviation of 20 milligrams. Can we reject the claim at a 0.05 level of significance?
4000 B.C. A.D. 150 A study was done on skull sizes of humans during different time periods. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. H2 27 27 131.05 mm 133.94 mm S 5.18 mm 5.27 mm a. Use a 0.05 significance level to test the claim that the mean skull breadth in 4000 B.C is less than the mean skull breadth in A.D 150. What are the null and alternative hypotheses? O B. Ho: H1 =H2 O A. Ho: H1 =H2 H:H1> H2 OC. Ho: H1 = H2 H1: H1 # H2 O D. Ho: H1 # H2 H: H1
The mean time it takes a group of students to complete a statistics final exam is 98 minutes, and the standard deviation is 9 minutes. Within what limits would you expect approximately 95% of the students to complete the exam? Assume the variable is approximately normally distributed.
Consider the following sample data. Sample A: 11, 22, 33 Sample B: 81, 92, 103 Sample C: 1,100; 1,111; 1,122 (a) Find the mean and standard deviation for each sample. Sample A: Sample B: Sample C: Mean Sample Standard Deviation (b) What does this exercise show about the standard deviation? multiple choice The idea is to illustrate that the standard deviation is not a function of the value of the mean. The idea is to illustrate that the standard deviation is a function of the value of the mean.

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