The team determined that to confirm the validity of their screening experiment they should compare
the test score results for some students that were at both the high setting and low setting within the last three years. This would allow them to compare the impact of the factors for individual students.

What I need to find out is:
For each of the three factors for which data is provided:
a. Write a null and alternative hypothesis statement about the impact of the factor on student test scores.
b. Test each of the hypotheses at 90% confidence level. The question shoud I use here to solve this problem?
There is paired data. And, we want to see which of the three (style, community involvement, or a two-parent home) has moved the average test scores the most. There is also a mention of a hypothesis test and a degree of confidence sought after.
c. Based on the results of steps a. and b., determine whether or not each of three factors have a significant impact on student test scores.

In other words, what I need to find out:
Write the null hypothesis statement for STYLE::::

Write the alternate hypothesis statement for STYLE:::

Does STYLE have significance?

Write the null hypothesis statement for COMM INVOLVEMENT::::

Write the alt. hypothesis statement for COMM INVOLVEMENT::::

Does COMMUNITY INVOLVEMENT have significance? :::

Write the null hypothesis statement for 2 parent family:::

Write the alt. hypothesis statement for 2 parent family:::

Question :
The mean score on a standardized psychology test is supposed to be 50. Believing that a group of psychologists will score higher, we test a random sample of 11 psychologists. Their mean score is 45 with s=3. Test at a level of significance of 1%.

At a certain university, the average cost of books per student was $400 per student last semester. In a sample of 40 students this semester, their average cost was $430 with a standard deviation of $80. The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?

A researcher is looking at the relationship between home-schooling and achievement. She is hypothesizing that the home-schooled children will score higher than non home-schooled children on a standardized achievement test.
a. What is the null hypothesis?
b. What is the alternative hypothesis? (Remember that every possibility

If the critical values for a statistical test are 1.96 and 1.96, determine if you would reject or fail to reject the
null hypothesis in each of the following cases:
a. z 1.06
b. z 2.06
c. A z score beyond which 7% of the data fall in each tail

The mean math scorefor fifth grade students at Smart Elementary is 90 with a standard deviation of 8. The fifth grade students are tested each year to determine if the mean score remains the same. A random sample of 30 students are chosen from the classes this year and provide a sample mean score of 94. The null hypothesis Ho:

See attached file.
Based on the information given for each of the following studies, decide whether to reject the null hypothesis. For each, give
(a) the Z-score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected,
(b) the Z score on the comparison distribution for the samp

A studentscores 50 on a psychology exam and 83 on an economics exam. The psychology exam has a mean score of 60 and the standard deviation of 5. The economics exam has a mean score of 80 and a standard deviation of 10. Find the z-scorefor each test and decide which exam score is relatively better.
What is the z-scorefor th

On a test whose distribution is approximately normal with a mean of 50 and a standard deviation of 10, the results for three students were reported as follows:
Student Opie has a T-score of 60.
Student Paul has a z-score of -1.00.
Student Quincy has a z-