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Sindrei [870]
3 years ago
15

Alice wanted to compare birthday cake prices in two supermarkets. She wrote down the daily prices for a few days and found that

the difference of the two sample means is $4.01. The standard deviation of the difference of the sample means is $5.46. The 95% confidence interval of the sample mean difference is between and
Mathematics
1 answer:
balu736 [363]3 years ago
8 0

The 95% confidence interval of the sample mean difference is between -8.02 and +16.38


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3 years ago
The value of y varies directly with x, and y = 18 when x = 12. find y when x = 132.
sveta [45]
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4 0
3 years ago
When downloading a large file from the internet Alice interrupted the download by closing her computer. Later that evening she r
Temka [501]

Using the slope concept, it is found that the rate of download of the file is of 1920 MB/s.

<h3>What is the slope?</h3>

The slope of a linear function is given by the <u>change in the output divided by the change in the input</u>.

In this problem:

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m  = \frac{3840}{2} = 1920

The rate of download of the file is of 1920 MB/s.

You can learn more about the slope concept at brainly.com/question/25934562

8 0
2 years ago
Did ari and Cal walk the same distance? Explain
Setler [38]
It depends on the question
4 0
3 years ago
–0.4|x + 5.75| – 4.3 = –8.7
ANTONII [103]
5.25, -16.75
I think it’s wrong
6 0
3 years ago
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