A medical researcher suspects that the pulse rate of smokers is higher than the pulse rate of non-smokers. Test the researcher’s suspicion using α = 0.01. Assume the two samples are random and independent. Smokers Nonsmokers

n1 = 100 n2 = 110

x1 = 87
x2 = 83

σ1 = 4.9 σ2 = 5.3
1What are the hypotheses?
2What type of test should be performed?

3What is the test statistic?

4What is the conclusion?

2 x t divided by n

step-by-step explanation:

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

-6 is the correct option from the above given options