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IgorC [24]
3 years ago
15

He takes a random sample of 49 recent charterholders and computes a mean salary of $172,000 with a standard deviation of $35,000

. Use this sample information to determine the 90% confidence interval for the average salary of a CFA charterholder.
Mathematics
1 answer:
uysha [10]3 years ago
4 0

Answer:

the 90% of confidence intervals for the average salary of a CFA charter holder

 (1,63,775 , 1,80,000)

Step-by-step explanation:

<u>Explanation</u>:-

random sample of n = 49 recent charter holders

mean of sample (x⁻) =  $172,000

standard deviation of sample( S) = $35,000

Level of significance α= 1.645

<u> 90% confidence interval</u>

(x^{-} - Z_{\alpha } \frac{s}{\sqrt{n} } , x^{-} + Z_{\alpha } \frac{s}{\sqrt{n} })

(172000 - 1.645 \frac{35000}{\sqrt{49} } , 172000 +1.645 \frac{35000}{\sqrt{49} })

on calculation , we get

(1,63,775 , 1,80,000)

The mean value lies between the 90% of confidence intervals

(1,63,775 , 1,80,000)

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Answer:

-3° C < 1°C is the correct option.

Step-by-step explanation:

As we know that:

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If someone says that something is cooler than the other thing, it indicates that it is lesser than the other based on its temperature.

As the ice cream at −3°C is cooler than ice cream at 1°C, it indicates that temperature -3° C < temperature  1°C.

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Answer:

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Step-by-step explanation:

Three-fourths of twelve is written as

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The graph used in circular shape is called the a pie chart.

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That is a 28 minute difference :)
==========================
What you can do to figure these equations or problems out?
Simple, what you need to do is grab the end time, in this case, 7:33 and make it a number, so instead of time, 7:33, its now 733. You do the same to the start time. Then, you Subtract 705 from 733, or more like:
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