Jolyn, a golfer, claims that her drive distance is not equal to 222 meters, on average. several of her friends do not believe her, so she decides to do a hypothesis test, at a 5% significance level, to persuade them. she hits 11 drives. the mean distance of the sample drives is 218 meters. jolyn knows from experience that the standard deviation for her drive distance is 14 meters. h0: μ=222; ha: μ≠222 α=0.05 (significance level) what is the test statistic (z-score) of this one-mean hypothesis test, rounded to two decimal places? provide your answer below:

0.29

Step-by-step explanation:

z-score is given by the formula:

z=(μ-M)/σ where

Therefore

z=(222-218)/14≈0.29

-0.95

Step-by-step explanation:

The hypotheses were chosen, and the significance level was decided on, so the next step in hypothesis testing is to compute the test statistic. In this scenario, the sample mean distance, x¯=218. The sample the golfer uses is 11 drives, so n=11. She knows the standard deviation of the drives, σ=14. Lastly, the golfer is comparing the population mean distance to 222 meters. So, this value (found in the null and alternative hypotheses) is μ0. Now we will substitute the values into the formula to compute the test statistic:

z0=x¯−μ0σn√=218−2221411√≈−44.221≈−0.95

So, the test statistic for this hypothesis test is z0=−0.95.

answer:

it will cost 480 dollars to refurbish the larger wood floor

step-by-step explanation:

as it's a ratio of 4 that costs 384 dollars, divide the price by the ratio

384 / 4 = 96 dollars

96 dollars per unit of the ratio

now to get the price to refurbish the larger wood floor, times the price by the units

96 * 5 = 480

19.side- angle- side

20. angle- side- angle

step-by-step explanation: