Arecent study by ohio state university reported at science daily suggests that students with cell phones may take more risks than students that do not have cell phones. in a sample of 305 ohio state university female students, 128 (42%) responded that if they had a cell phone, they would be willing to walk somewhere after dark that they would normally not go.

use the above survey results to test the hypotheses
h0: p = 0.50
ha: p < 0.50
where p is the proportion of female students who, if they had a cell phone, would be willing to walk somewhere after dark that they would normally not go.

question 1. what is the value of the test statistic z for this hypothesis test? (use 2 decimal places in your answer).

The value of the test statistic z for this hypothesis test is -2.79

Step-by-step explanation:

Consider the provided information.

To calculate the test statistic use the formula:

Where, z  is Test statistics, n is Sample size, p₀ = Null hypothesized value  and = Observed proportion.

p₀ = 0.50

Thus 1-p₀= 0.50

42% responded that if they had a cell phone, thus

The sample size is 305.

Substitute the respective values in the above formula.

Hence, the value of the test statistic z for this hypothesis test is -2.79

the square root of what number? if you add that, then someone will probably answer the question.

2/3

step-by-step explanation:

the slope of a line is equal to the rise/run. in this case the line rises 2 units for every +3 units it moves