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Aloiza [94]
3 years ago
5

A statistics practitioner would like to estimate a population mean to within 50 units with 99% confidence given that the populat

ion standard deviation is 250. What sample size should be used
Mathematics
1 answer:
cricket20 [7]3 years ago
3 0

Answer:

Step-by-step explanation:

Using the sample size formula

n= (zs/e)²

z is the z score at 99% = 2.58

s is the standard deviation = 250

e is the sample mean = 50

Substitute

n = (2.58×250/50)²

n = (2.58×5)²

n = (12.9)²

n=166.41

hence the sample size is 166.41

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3 years ago
One hall can accommodate 65 people. How many halls are required to accommodate 520 people? ​
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8 halls would be required to accommodate 520 people in the hall.

As we know that a hall can accommodate 65 people.

To determine the number of hall required for 520 people,

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So, we will divide the 1 by 6 to find :

The number of one person accommodate = 1/65 Hall

Then, 520 people required to accommodate = 1/65 × 520

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1 year ago
Mrs. Lee is putting a new fence around her square garden. The garden is 144
N76 [4]
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3 years ago
BRAINLIEST to wherever gets this correct ​
schepotkina [342]

Answer:

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We have to find the volume of cylinder.

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Margaret has a monthly clothes budget of $50. She maps the amount of money she spends each month to the number of items of cloth
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