8.2.11-T Claim: 14 SH2; a = 0.10. Assume of to? Sample statistics: X = 2407, S1...
statistics. Assume that the MILLJ w population variances and at the given level of significance using the given an sample statistics are from independent samples that are randomly selected and each population has a normal distribution Claim o; -o.q=001 Sample statistics 5=8.5, n = 11.5 = 4.5, n2 = 12 Hoo-o Hy oo OC H₂020 / Ho: 0} = 0 Ho; <o H, o *o2 Find the critical value 5 42 (Round to two decimal places as needed) Find the...
Find the standardized test statistic, t, to test the claim that μ1 < μ2. Two samples are random, independent, and come from populations that are normally distributed. The sample statistics are given below. Assume that two populations' variance is the same (σ21= σ22). n1 = 15 n2 = 15 x1 = 25.76 x2 = 28.31 s1 = 2.9 s2 = 2.8
Find the standardized test statistic, t, to test the claim that u, u. Two samples are randomly selected and come from 02 populations that are normal. The sample statistics are given below. Assume that o n1-25, n2 30, x, 17 , x2 15, s1 1.5, s2 1.9 O A. 4.361 B. 3.287 C. 1.986 D. 2.892
This Question: 1 pt This n Help Test the claim about the difference betw populations are normally distributed. two population means μ1 and μ2 at the level of si Claim: Hu2 0.01 Population statistics: σ1-34, σ2-1.5 Sample statistics: x1 = 15, n 1-27, x2 = 13, n2-26 Determine the alternative hypothesis Determine the standardized test statistic - Round to two decimal places as needed) Determine the P-value P-value = □ (Round to three decimal places as needed.) What is the...
distributed Use a t-test to test the claim about the population mean ji at the given level of significance a using the given sample statistics. Assume the population is normally Claim: #26; a=0.10 Sample statistics: X = 26.5, s=4.3, n = 11 What are the null and alternative hypotheses? Choose the correct answer below O A. Ho +26 OB. Ho: 226 H, = 26 H <26 OCH p=26 OD. HY S 26 H, #26 H>26 What is the value of...
Test the claim about the difference between two population means phy and ly at the level of significance a. Assume the samples are random and independent, and the populations are normally distributed Claim: My SM2; �.01. Assume o to Sample statistics: X2 = 2413, 5, - 176, n, = 14 and X2 - 2306, 6, 53, n2 - 11 Identify the null and alternative hypotheses. Choose the correct answer below. O A HO:44 <H2 Hg: 49 212 Oc. Họ t...
According to a certain organization, adults worked an average of 1,792 hours last year. Assume the population standard deviation is 410 hours and that a random sample of 50 adults was selected. Complete parts a through e below. O = 57.98 (Round to two decimal places as needed.) b. What is the probability that the sample mean will be more than 1,820 hours? P(X>1,820) = .3146 (Round to four decimal places as needed.) c. What is the probability that the...
This Question: 12 pts 18 of 23 (16 complete) Use the given sample statistics to test the claim about the difference between two population means ?? and ?2 at the given level of sign ficance ? Claim ?.-P2, ? :0 0, Statistics. x 1-68, s,-51, n1 : 40 and x2-63, sz" 7.1. n2-55 Determine the critical value(s). Round to three decimal places as needed Use a comma to separate answers as needed) Determine the rejection region Select the correct choice...
A local bank claims that the waiting time for its customers to be served is the lowest in the area. A competitor bank checks the waiting times at both banks. The sample statistics are listed below. Use P-values to test the local bank claim. Use a "alpha" = 0.05 Local Bank: n1= 45. x1= 5.3 minutes. s1= 1.1 minutes. Competitor bank: n2= 50. x2= 23. s2= 1.9.
Medium lead level: 72,98,92,85,82,97,83,92,102,111,91 & high lead level: n2=11 , x2=90.267 , s2=10.588 %) 9.2.12-T EQuestion Help Listed in the data table are IQ scores for a random sample of subjects with medium lead levels in their blood. Also listed are statistics from a study done of IQ scores for a random sample of subjects with high lead levels. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population...