Miranda wrote the following incorrect equation while attempting to simplify the expression 8 x 10 1/4 8 x (10 1/4) = (8 + 10) x (8 + 1/4) how can miranda correct her mistake in the right-hand side equation? a. she should switch the order of factors in the product of sums b. she should switch addition to multiplication and multiplication to addition c. she should apply the associative property of multiplication instead of the distributive property d. she should apply the commutative property of multiplication instead of the distributive property

Acell phone company offers two plans to its subscribers. at the time new subscribers sign up, they are asked to provide some demographic information. the mean yearly income for a sample of 40 subscribers to plan a is $45,000 with a standard deviation of $9,200. for a sample of 25 subscribers to plan b, the mean income is $64,300 with a standard deviation of $7,100. at the 0.025 significance level, is it reasonable to conclude the mean income of those selecting plan b is larger? assume unequal population standard deviations. hint: for the calculations, assume the plan a as the first sample. what is the decision rule? (negative amount should be indicated by a minus sign. round your answer to 3 decimal places.) compute the value of the test statistic. (negative amount should be indicated by a minus sign. round your answer to 2 decimal places.) what is your decision regarding h0 ? reject h0 fail to reject h0 compute the p-value. less than 0.01 between 0.01 and 0.025 between 0.025 and 0.05 between 0.05 and 0.10 greater than 0.10