Determine the critical values that would be used in testing each of the following null hypotheses using the classical approach. (Give your answers correct to three decimal places.)
(a) Ho: ρ = 0 vs. Ha: ρ
≠ 0, with n = 18 and α = 0.05
(smaller value)
(larger value)
(b) Ho: ρ = 0 vs. Ha: ρ
> 0, with n = 32 and α = 0.01
(c) Ho: ρ = 0 vs. Ha: ρ
< 0, with n = 16 and α = 0.05
Determine the critical values that would be used in testing each of the following null hypotheses...
Determine the critical values that would be used in testing each of the following null hypotheses using the classical approach. (Give your answers correct to three decimal places.) (a) Ho: ρ = 0 vs. Ha: ρ ≠ 0, with n = 18 and α = 0.05 (smaller value) (larger value) (b) Ho: ρ = 0 vs. Ha: ρ > 0, with n = 32 and α = 0.01 (c) Ho: ρ = 0 vs. Ha: ρ < 0, with n...
Determine the critical region and the critical values used to test the following null hypotheses. (Assume a Z-test statistic is appropriate here.) (a) H0: μ = 57 (≥), Ha: μ < 57, α = 0.02 Select: less than or equal to, greater than or equal to, at least as extreme as, at most as extreme as Select: +, -, +/- Critical value: ___________ (b) H0: μ = −93 (≥), Ha: μ < −93, α = 0.1 Select: less than or...
Determine the critical region and the critical values used to test the following null hypotheses. (Assume a Z-test statistic is appropriate here.) (a) H0: μ = 60 (≥), Ha: μ < 60, α = 0.01 ---Select--- less than or equal to greater than or equal to at least as extreme as at most as extreme as ---sign--- + - ± (b) H0: μ = −83 (≥), Ha: μ < −83, α = 0.1 ---Select--- less than or equal to greater than...
For each of the following situations, find the critical value(s) for z or t. a) Ho: ρ:0.4 vs. HA: ρ#0.4 at α-0.05 b) Ho: ρ:0.2 vs. HA: ρ > 0.2 at α-o10 c) Ho: μ-20 vs. HA: μ #20 at α-0.10; n-44 d) Ho: ρ-o4 vs. HA: ρ > 0.4 at α-o05; n-340 e) Ho: μ-40 vs. HA: μ < 40 at α-0.10; n-1000 a)The critical value(s) is(are) ▼ (Use a comma to separate answers as needed. Round to two...
lass: Sta For each of the following situations, find the critical value(s) for z or t. a) Ho: ρ 0.2 vs. HA: ρ #0.2 at α-0.05 b) Ho: ρ 0.5 vs. HA: ρ > 0.5 at α-0.05 c) Ho: μ-40 vs. HA: μ#40 at α-0.05; n.50 d)Ho: ρ#0.2 vs. HA, p>O.2 at α 0.10; n-340 e) Ho: μ-80 vs. HA: μ < 80 at α :0.05; n-1000 ork
need help: Suppose that you are testing the hypotheses H0 με 16 vs. HA: μ< 16. A sample of size 16 results in a sample mean of 15.5 and a sample standard deviation of 20 a) What is the standard error of the mean? b) What is the critical value of t* for a 90% confidence interval? c) Construct a 90% confidence interval for μ. d) Based on the confidence interval, at α#0.05 can you reject Ho? Explain. a) The...
Perform the test of hypotheses indicated, using the data from independent samples given. Use the critical value approach. Compute the p-value of the test as well α. Test Ho : μι-μ2 = 3 vs. Ha : μι-μ2メ 3 @ α = 0.05 , ni = 35, z i = 25, si = 1 ,S2 b.Test Ho : μι-ㄣ--25 vs. Ha : μι-μ2 <-25 @ α = 0.10. ni = 85, 2:1 = 188, 81 = 15 n2 = 62,-2-2 15,...
12. For each of the following situations, find the critical value for z a) Hoff 0.05 vs. HA:p > 0.05 at α 0.05. b) Ho:p 0.6 vs. HAip 0.6 at α 0.01. c) Ho:p 0.5 vs. HAP < 0.5 at α 0.01; n 500. d) Ho: 0.2 vs. HA:p < 0.2 at α 0.01 .
1. In testing hypotheses, the researcher initially assumes that the alternative hypothesis is true and uses the sample data to reject it. True False 2. The first step in testing a hypothesis is to establish a true null hypothesis and a false alternative hypothesis. True False 6. The power curve provides the probability of Correctly accepting the null hypothesis Incorrectly accepting the null hypothesis Correctly rejecting the alternative hypothesis Correctly rejecting the null hypothesis 7. Suppose that Ho: μ ≤...
4. Hypothesis testing for a Population proportion Write down the null and alternate hypotheses for part a) and b) first. a) points) According to a 2005 survey conducted by the Association for Dressings and Sauces, 85% of American adults cat salad at least once a week. A nutritionist suspects that the percentage is lower than this. He conducts a survey of 200 American adults and finds that 158 of them eat salad at least once a week. Using either the...