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egoroff_w [7]
3 years ago
15

how many of the 250 grandparents in the population would you expect to prefer online shopping with merchant A? ANSWER QUICK PLEA

SE

Mathematics
2 answers:
igor_vitrenko [27]3 years ago
6 0

Answer: 40

Step-by-step explanation:

It is given in the picture, that the sample size n=25, when we multiply 10 to it , it will be equals to the total number of grandparents.

Also, from the picture it can be seen that the population population would expect to prefer online shopping with merchant A =4

Now, the number of grandparents would expect to prefer online shopping with merchant A= 10\times4=40

den301095 [7]3 years ago
4 0
It would be 40. youd just add a zero to the end of each number and they add up to 250
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Jeremy's score was 1.75 standard deviations above the mean. which kf thr following is closest to his percentile rank
Gelneren [198K]
The answer is 96%.

Explanation:
It is generally presumed that the scores are normally distributed.

1) You are given how many standard deviations from the mean Jeremy's score is. This is exactly the definition of the z-score. Therefore z = 1.75

2) Look at a left-tail z-table in order to find the area of the normal curve on the left of your z-score (see picture attached). A = 0.9599

3) Multiply the area by 100 in order to find the percentile:
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Therefore, 95.99% of the students scored less than Jeremy.

Hence, the answer is 96%.

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3 years ago
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Step-by-step explanation:

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cause the parabola is horizontal and opens on the right.

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