Find the critical value(s) for the type of t-test with level of significance α and sample...

Find the critical value(s) for the type of t-test with level of significance α and sample size n. Ha: μ < 20, α = 0.005, n = 25.

Expert Solution

Ha: μ < 20

α = 0.005

n = 25

Degree of Freedom (DF) =n-1 = 24

critical value(s) for the type of t-test from t-distribution table is 2.797 (Answer)

t-distribution table

jeff jeffy answered 2 years ago

1. Find the critical t-value(s) for a one sample t-test given: α = 0.01 n =...

1. Find the critical t-value(s) for a one sample t-test given: α = 0.01 n = 12 one-tailed test (lower-tailed critical region) a. 2.130 and -2.130 b. 3.103 and -3.103 c.-2.718 d. -2.567 e. 2.998 2. Find the critical t-value(s) for a one sample t-testgiven: α = 0.05 df = 26 one-tailed test (upper-tailed critical region) a. 2.042 and -2.042 b.-1.812 c. 1.706 d. 3.241 e. -1.339 3. What decision you would make regarding the null hypothesis (reject or fail...

Find and sketch the critical value(s) and the rejection region for a left-tailed t-test with α...

Find and sketch the critical value(s) and the rejection region for a left-tailed t-test with α =0.02 and n=42.

At a .01 significance level with a sample size of 18, find the critical value for...

At a .01 significance level with a sample size of 18, find the critical value for the correlation coefficient of 1.

Conduct a test and find if there is a difference at the α=0.01 level of significance....

Conduct a test and find if there is a difference at the α=0.01 level of significance. Inrandomized, double-blind clinical trials of a new vaccine, children were randomly divided into two groups. Subjects in group 1 received the new vaccine while subjects in group 2 received a control vaccine. After the first dose, 67 of 607 subjects in the experimental group (group 1) experienced fever as a side effect. After the first dose, 109 of 728 subjects in the control group...

Test at the α = 0.05 significance level whether the mean of a random sample of...

Test at the α = 0.05 significance level whether the mean of a random sample of size n = 16 is statistically significantly less than 10 if the distribution from which the sample was taken is normal, ?̅= 8.4 and ? 2 = 10.24. a) What is the appropriate test you can use to test the claim? b) What are the null and alternative hypotheses for this test? c) What is your conclusion? d) Find the confidence interval on the...

Provide an appropriate response. Find the critical value and rejection region for the type of t-test...

Provide an appropriate response. Find the critical value and rejection region for the type of t-test with level of significance α and sample size n. Two-tailed test, α = 0.1, n = 23

Find the critical value of the test at the 0.025 level of significance. Round your answer to three decimal places.

A manager for an insurance company believes that customers have the following preferences for life insurance products: 50% prefer Whole Life, 30% prefer Universal Life, and 20% prefer Life Annuities. The results of a survey of 351 customers were tabulated. Is it possible to refute the sales manager's claimed proportions of customers who prefer each product using the data?ProductNumberWhole39Universal86Annuities226Copy DataStep 8 of 10 : Find the critical value of the test at the 0.025 level of significance. Round your answer to...

In a hypothesis test, the significance level α (alpha) represents the threshold for how unlikely sample...

In a hypothesis test, the significance level α (alpha) represents the threshold for how unlikely sample data has to be, assuming the null hypothesis, in order for us to reject the null hypothesis. Often alpha is taken to be 0.05, or 1/20, which means that even if the null hypothesis is true, there is a 1/20 chance that we will reject it because our sample data happens to have a P-value less than 0.05. We want to study the heights...

I assert that the critical value of t, for a One sample t Test with a...

I assert that the critical value of t, for a One sample t Test with a nondirectional alternative hypothesis and using a particular α level, will increase as sample size increases. Am I correct? Circle “YES” or “NO.” If NO, explain why not?

find the critical value Z α/2 when the confidence level is 92%.

Question