tudents. You sample 35 night students, and the sample mean GPA is 2.91 with a stan .97. You sample 20 day students, and the sample mean GPA is 2.99 with a standard he claim using a 1% level of significance. Assume the population standard deviations PAS are normally distributed. Give answer to at least 4 decimal places. What are the correct hypotheses? lo: P₁ = P₂₁ 11: P₂ ased on the hypotheses, find the following: o #v OF H₂

Suppose x has a normal distribution with mean ? = 53 and standard deviation ? = 7.Describe the distribution of x values for sample size n = 4. (Round ?x to two decimal places.) ?x =  ?x =  Describe the distribution of x values for sample size n = 16. (Round ?x to two decimal places.) ?x =  ?x =  Describe the distribution of x values for sample size n = 100. (Round ?x to two decimal places.) ?x =  ?x =

An archer’s standard deviation for his hits is six (data is measured in distance from the center of the target). An observer claims the standard deviation is less.a. What type of test should be used?b. State the null and alternative hypotheses.c. Is this a right-tailed, left-tailed, or two-tailed test?

Milan.jshh

A set of exam scores is normally distributed with a mean = 82 and standard deviation = 9. Use the Empirical Rule to complete the following sentences. 68% of the scores are between and 95% of the scores are between and 99.7% of the scores are between and

Children with autism differ significantly from children without autism on tests of varbal ability.   repeated measures? or ind. with two tails?

Step 1 of 3. State the null and alternative hypotheses for the test.   Step 2 of 3. Compute the value of the test statistic. Round your answer to three decimal places   Step 3 of 3. Draw a conclusion and interpret the decision.

The mean annual tuition and fees for a sample of 8 private colleges was $30,000 with a standard deviation of $4500. A dotplot shows that it is reasonable to assume that the population is approximately normal. You wish to test whether the mean tuition and fees for private colleges is different from $34,100. State the null and alternate hypotheses. O H;:µ = 34,100, H̟: µ# 34,100 O H;iH# 34,100, H̟: µ = 34,100 O H;:H = 30,000, H,: µ# 30,000 O H;iH = 34,100, H.: µ = 30,000

Please help with 6 a-b

ACT scores are normally distributed with mean 22 and standard deviation 4.7. A random sample of 32 MiSU students has a mean ACT of 23.6.  A. Estimate the mean ACT score for all MiSU students at the 95% confidence level. B. If we want to estimate the mean ACT score for all MiSU students at the 99% confidence level with a margin of error of 10, then what sample size will we need?