E Question 1/2
O
> NEXT
BOOKMARK
A high school band director wants to choose songs for his students to play at the spring concert. He narrows his choice down to three types of music. In order to
choose songs students at the school like, he takes a poll of some students in different grades. The table shows the results.
(a)
Grade Level of Students
9th
10th
11th
12th
Jazz
III
HHI
>
Type of Music
Contemporary
HH
Classical
II/
//
//
III
Part A
Enter a number in each box to create a marginal frequency distribution of the data.
9th
10th
11th
12th
Total

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?

According to a research study, parents with young children slept 6.4 hours each night last year, on average. a random sample of 18 parents with young children was surveyed and the mean amount of time per night each parent slept was 6.8. this data has a sample standard deviation of 0.9. (assume that the scores are normally distributed.) researchers conduct a one-mean hypothesis at the 5% significance level, to test if the mean amount of time parents with young children sleep per night is greater than the mean amount of time last year. the null and alternative hypotheses are h0: μ=6.4 and ha: μ> 6.4, which is a right-tailed test. the test statistic is determined to be t0=1.89 using the partial t-table below, determine the critical value(s). if there is only one critical value, leave the second answer box blank.