Provided below are summary statistics for independent simple random samples from two populations. Use the pooled t-test and the pooled t-interval procedure to conduct the required hypothesis test and obtain the specified confidence interval.X₁14, s, 2.1, n₁ = 15, X₂ = 16, s₂ = 2.3, n₂ = 15a. Two-tailed test, α = 0.01b. 99% confidence intervala. First, what are the correct hypotheses for a two-tailed test?OA. Ho: H₁ H₂H₂: H₁ H₂ỌC. Ho:HH2H₂: H₁H₂O E. Ho: H₁H₂H₂: H₁ H₂Next, compute the test statistic.t= (Round to three decimal places as needed.)Now determine the critical values.+¹/2 = + (Round to three decimal places as needed.)What is the conclusion of the hypothesis test?Since the test statisticin the rejection region,b. The 99% confidence interval is from to.(Round to three decimal places as needed.)но-OB. Ho: H₁ H₂H₂H₁ H₂OD. Ho. HiếuH₂= P₁ = P₂OF. Ho H₁ H₂H₂H₁ H₂

Let be the two population means.Given that,

Answered: a. First, what are the correct…

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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Q1. Does this statement accurately represent Type I error? Rejecting the Ho after a test statistic results in a p-value of .085 at α=0.05.A. YesB. NoC. None of the above
Find p value and determine test statistic
Test the claim about the population mean μ at the level of significance a. Assume the population is normally distributed. Claim: μ<4915; a = 0.02 Sample statistics: x=5017, s=5613, n = 54 What are the null and alternative hypotheses? Ho: μ 4915 Ha: μ < 4915 (Type integers or decimals. Do not round.) Find the standardized test statistic t. t = 0.13 (Round to two decimal places as needed.) Find the P-value. P= (Round to three decimal places as needed.)
hh
You are performing a left-tailed test with test statistic z=−2.04, find the p-value to 4 decimal places.Note: You will need to use the z and t sheet to get this answer.
In testing the hypotheses H 0 : p = 0.50 H0:p=0.50 versus H A : p ≠ 0.50 HA:p≠0.50 , a sample of 100 observations produces a test statistic z = 0 z=0 . What is the p p -value for this test? a1.0000 b 0.6915 c 0.5000 d 0.0000 cNone of the above.
Lesson Plan Revi..pdf MacBook Pro 4. A farmer has a flock of turkeys with weights that are normally distributed with a mean of 15.3 pounds and a standard deviation of 2.3 pounds. If one turkey is selected at random, wha weight is less than 17.0 pounds? is the probability that its
For the following claim, find the null and alternative hypotheses, test statistic, critical value, and draw a conclusion. Assume that a simple random sample has been selected from a normally distributed population. Claim: The mean IQ score of statistics professors is less than 122. Sample data: n=21, x=120, s=14. The significance level is α=0.05. 1. Determine the test statistic t. t= ____ (Round to three decimal places as needed.) 2. Find the critical value using a t-distribution table. The critical value is ____ (Round to three decimal places as needed.) 3. What is the conclusion? A. Fail to reject the null hypothesis and do not support the claim tha μ>130. B. Reject the null hypothesis and do not support the claim that μ>130. C. Reject the null hypothesis and support the claim that μ>130. D. Fail to reject the null hypothesis and support the claim that μ>130.
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Use the information given and the eight-step approach to test the hypotheses. Let a = 0.01. Assume that the population is normally distributed. Ho : µ = 7.81 Ha:µ < 7.81 n = 18 x = 17.1 s = 1.67 Appendix A Statistical Tables (Round your answer to 2 decimal places, e.g. 15.25.) The value of the test statistic is and we
Average Family Size The average family size was reported as 3.18. A random sample of families in a particular school district resulted in the following family sizes: 3 2 7 5 4 3 6 2 5 4 3 2 7 4 2 5 3 3 2 3 5 At a=0.01, does the average family size differ from the national average? Assume the population is normally distributed. State the hypotheses and identify the claim. H0: H1: Critical value(s):
Identify the relevant the decision for the test, H0: μ = 2,500 vs. Ha: μ > 2,500 at α = 0.01 for an observed significance p = 0.018. Group of answer choices Since p ≤ α, the decision is not to reject H0. Since p > α, the decision is not to reject H0. Since p > α, the decision is to reject H0. Since p ≤ α, the decision is to reject H0. Since p > α/2, the decision is to reject H0.

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