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Rom4ik [11]
3 years ago
6

Mr. Bryant is trying to figure out which class project to work on for community service. He surveyed the junior and senior stude

nts about their preferred project. The frequency table shows the responses of the students.
Juniors Seniors Total
Park Cleanup 30 26 56
Food Kitchen 50 34 84
Clothing Drive 10 50 60
Total 90 110 200

Determine the joint frequency of being a senior and wanting to have a park cleanup. Explain what this answer represents.
Mathematics
1 answer:
son4ous [18]3 years ago
7 0

Answer:

Juniors are more likely to wanting to have a park cleanup then Seniors. This makes them more likely to attend and participate in it.

Step-by-step explanation:

Since the Junior total is larger than the Senior total it shows that the Juniors are more likely to attend the park clean up.

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Answer:

Kindly check explanation

Step-by-step explanation:

Given the following :

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To obtain the z-score :

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Get the P value to know if to reject or accept the null:

P(z > 4.0134) = 1 - P(z < 4.0134)

P(z < 4.0134) = 1

1 - P(z < 4.0134) = 1 - 1 =0

Since P value is < alpha, we reject the null.

Hence average is > 20000

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