MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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- 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…arrow_forwarda population proportion of 0.61. Suppose a random sample of 662 items is sampled randomly from this populationarrow_forwardSelect the correct answer below: p-value>0.10 0.05< p-value <0.10 0.01< p-value <0.05 p-value <0.01arrow_forward
- A middle school teacher believes that a reading rewards program results in a higher number of pages read per year after the program is completed. The teacher chooses a simple random sample of students and records the number of pages read per year before starting the program and after the program is completed. The results of the study are below What are the population parameters? Pick Before 813.25 192250.25 182875.22 After 904.95 What is the level of significance? Ex: 0.12 Mean Variance Observations Hypothesized Mean Difference 100 100 Is the two-sample hypothesis test a paired or unpaired t-test? Pick 198 t Stat P[T< t) one-tail tCitical one-tail P[T<=t) two-tail t Critical two tal Confidence Level What is the null hypothesis Ho? Pick 0.068 1.653 What is the alternative hypothesis H.? Pick 1.972 95% Should Ho be rejected or does Ho fail to be rejected? Pick What conclusion can be drawn from the data? Pick v evidence exists to support the claim that the mean number of pages read per…arrow_forwardThe one-sample chi-square focuses on the distribution of two variables.arrow_forwardA population has a mean = 73 and a standard deviation σ = 22. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=240. 1x = (Simplify your answer.)arrow_forward
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