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sattari [20]
2 years ago
15

Jolyn, a golfer, claims that her drive distance is not equal to 222 meters, on average. Several of her friends do not believe he

r, 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:
Mathematics
1 answer:
Troyanec [42]2 years ago
3 0

Answer:

0.29

Step-by-step explanation:

z-score is given by the formula:

z=(μ-M)/σ where

  • μ is the hypothesis drive distance, which is 222
  • M is the mean sample drive distance
  • σ is the standard deviation of the sample drive distance

Therefore

z=(222-218)/14≈0.29

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Complete Question:

The weather forecast for next season calls for a 10% chance of wind, a 20% chance of rain, a 30% chance of clouds, and a 40% chance of sunshine. If there are 90 days in the season,spin the spinner 90 times to simulate the 90-day weather forecast. Which type of weather has the lowest observed frequency?

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Step-by-step explanation

From the question above

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