Consider an x distribution with standard deviation σ = 42.
(a) if specifications for a research project require the standard error of the corresponding x distribution to be 2, how large does the sample size need to be?

The sample size will need to be 42x-2

Step-by-step explanation:

i belive those are the ones that are under 90 degreese.

total amount to be paid = $19.5

step-by-step explanation:

given ,

original price = $25.99

discount = 25%

discount amount = 25% of original price

discount amount = 25/100   * 25.99

discount amount = $6.49

hence , the total amount to be paid = original price - discount amount

                                                            = $25.99 - $6.49

                                                            =$19.5

total amount to be paid = $19.5