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 13.75 hours with a standard deviation of 1.5 hours.At the 0.05 significance level, can we conclude that this group of students watch more than 13.25 hours of televison per week?

Which set of hypotheses should be used for this question?

H₀: 13.25 hours

H₁: > 13.25 hours

Noneof the options listed applies.

H₀: = 13.25 hours

H₁: 13.25 hours

H₀: 13.25 hours

H₁: = 13.25 hours

H₀: 13.25 hours

H₁: < 13.25 hours

question 2

A accounting firm claims that the mean starting salaries for purchasers is $55,000 per year. The mean of a sample of 25 purchasers was found to be $53,000 with a standard deviation of $2,500.At a significant level = 0.05 determine the critical values given the following null and alternative hypotheses.

H₀: = $55,000

H₁: $55,000

Critical Value 1

Critical Value 2