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Maru [420]
2 years ago
12

A teacher would like to estimate the mean number of steps students take during the school day. To do so, she selects a random sa

mple of 50 students and gives each one a pedometer at the beginning of the school day. They wear the pedometers all day and then return them to her at the end of the school day. From this, she computes the 98% confidence interval for the true mean number of steps students take during the school day to be 8,500 to 10,200. If the teacher had used a 90% confidence interval rather than a 98% confidence interval, what would happen to the width of the interval?
It would increase by 8%.
It would decrease by 8%.
It would increase, but not necessarily by 8%.
It would decrease, but not necessarily by 8%.
Mathematics
1 answer:
OleMash [197]2 years ago
4 0

Answer:

It would decrease, but not necessarily by 8%

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brilliants [131]
-3/2x

The rational expression would not be defined only when the denominator is divided by 0

That is:

2x =0

x = 0/2

x =0

Hence it would not be defined when x = 0.

Hope this helps.
8 0
3 years ago
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Pls help me divide this radical and pls show work
Alenkinab [10]
Let's start by rationalizing the radical:

4√6/√50 * √50/√50

This gets rid of the radical in the denominator, giving us:

4√300/50

√300 can be simplified to √3 * √100 or 10√3. Now we can insert this back into the numerator:

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This is equivalent to:

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40/50 can be simplified to 4/5.

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3 years ago
De║bc, ad=2cm and bd=3cm, then area(Δabc):area(Δade) is equal to
xxTIMURxx [149]

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Step-by-step explanation:

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2 years ago
H(x) = ax^2 +1<br> Find the value of a when h(-2) = 21.
blagie [28]

Answer:

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Step-by-step explanation:

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2 years ago
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dezoksy [38]

Answer:

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4/3(6y+21)-17=43

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multiply elements

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3 years ago
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