Question: QUESTION 1 A recent report found that students between the ages of 13 and 15 watch 13.25 hours of television per week. The distribution of

QUESTION 1

A recent report found that students between the ages of 13 and 15 watch 13.25 hours of television per week. The distribution of times follows the normal distribution. A researcher would like to look into these findings further.A random sample of 360 students revealed the mean was 12.75 hours with a standard deviation of 1.5 hours.At the 0.05 significance level, can we conclude that this group of students watch an average different than 13.25 hours of televison per week?

-Which set of hypotheses should be used for this question?

a.H0 : < 13.25 hours

H1 : 13.25 hours

b.H0 : = 13.25 hoursH1 : 13.25 hours

H0 : 13.25 hours

c.H1 : = 13.25 hours

H0 : 13.25 hours

d.H1 : > 13.25 hours

None of the options listed applies

QUESTION 2

A study was looking to determine if there was a difference in televison consumption between 2 age groups (Group A (13 to 15 years) and Group B (9 to 12 years). A sample of 50 children per group was taken and the mean for group A was 13.25 hours with a standard deviaiton of 1.3 hours.The mean for group B was 13.75 hours with a standard deviation of 1.5 hours.At the 0.05 significance level, can we conclude that Group A watches less televison than Group B per week?

Which set of hypotheses should be used for this question?

a.H0 :A > B

H1 :A B

b.H0 :A = B

H1 :A B

c.H0 :A < B

H1 :A B

d.None of the options listed applies.

H0 :A B

e.H1 :A = B

QUESTION 3

A recent report found that students between the ages of 13 and 15 watch 13.25 hours of television per week. The distribution of times follows the normal distribution. A researcher would like to look into these findings further.A random sample of 35 students revealed the mean was 12.75 hours with a standard deviation of 1.5 hours.At the 0.05 significance level, can we conclude that this group of students watch less than 13.25 hours of televison per week?

Calculate the test statistic for this hypothesis test rounded to 2 decimal places.

Test statistic = [a]

WHAT YOU SHOULD KNOW:

Hypothesis Testing (one and two populations)

-One-tailed vs two-tailed

-Procedures for large and small samples

-Type 1 and type 2 errors

Correlation & regression

-Coefficient of correlation & determination calculations & interpretations

-Develop the linear regression equation

-Predict values using the regression equation

-Confidence intervals for Y'

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