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Aloiza [94]
2 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]2 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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Vikki [24]
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Step-by-step explanation:
The power property of logarithm rule is :

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The second option that is flog6e is the right option among all the given options.
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2 years ago
If x and y vary inversely and x = 5 when y = -3.5, what is the value of x when y = 10?
Solnce55 [7]

Answer:

Step-by-step explanation:

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Putting values of x and y in the equation

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3 years ago
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Kryger [21]
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3 years ago
Hacksaw’s Boats of St. Lucia takes tourists on a daily whale/dolphinwatch cruise. Their brochure claims an 80% chance of siting
Fittoniya [83]

Answer:

The probability you see a dolphin or a whale on both days is 0.64

Step-by-step explanation:

Consider the provided information.

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