Bethany knits hats and scarves. a hat takes her 1.5 days, and a scarf takes her 4 days. bethany recently spent 18 days knitting 7 items. write and solve the system of equations to find the number of hats (h) and the number of scarves (s) that bethany knitted.
3hats, 4 scarves
2hats, 5 scarves
4 hats, 3 scarves
5 hats, 2 scarves

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.