3 years ago

Help me plzzz.......

1 answer:

3 0

21.) -14 + (-5) + (-12) + (-23) = -14 - 5 - 12 - 23 = -54

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professor190 [17]

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3 years ago

Taya2010 [7]

The first two were negative integers and the quotient is therefor a positive integer (Two negatives equal a positive)

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lidiya [134]

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tresset_1 [31]

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3 years ago

Firlakuza [10]

Answer:

Margin of error = 4.21 ounces

Step-by-step explanation:

According to the Question,

Given That, You measure 25 turtles' weights, and find they have a mean weight of 31 ounces. Assume the population standard deviation is 12.8 ounces

Therefore, Sample mean = 31 ounces , Sample size(n) = 25 , Alpha(α) = 0.10 & Population standard deviation(σ) = 12.8 ounces

Thus, Margin of error = $Z_{critical}$ × σ / √n ( $Z_{critical}$ at α=.010 is 1.645)

Putting The Values, We get

1.645 × (12.8 / √25 ) ⇒ 4.2112 ≈ 4.21

Thus, the maximum margin of error associated with a 90% confidence interval for the true population mean turtle weight is 4.21 ounces

8 0

3 years ago