Gavin recorded the grade-level and instrument of everyone in the middle school School of Rock below. Seventh Grade Students
Instrument # of Students
Guitar 14
Bass 2
Drums 5
Keyboard 5
Eighth Grade Students
Instrument # of Students
Guitar 12
Bass 9
Drums 4
Keyboard 9

Based on these results, express the probability that a seventh grader chosen at random will play the keyboard as a decimal to the nearest hundredth.

Ihave trouble finding the nth term of a linear sequence

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6

The null and alternate hypotheses are: h0: μ1 ≤ μ2 h1: μ1 > μ2 a random sample of 22 items from the first population showed a mean of 113 and a standard deviation of 12. a sample of 16 items for the second population showed a mean of 99 and a standard deviation of 6. use the 0.01 significant level. find the degrees of freedom for unequal variance test. (round down your answer to the nearest whole number.) state the decision rule for 0.010 significance level. (round your answer to 3 decimal places.) compute the value of the test statistic. (round your answer to 3 decimal places.) what is your decision regarding the null hypothesis? use the 0.01 significance level.