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taurus [48]
3 years ago
6

An agency that hires out clerical workers claims its workers can type, on average, at least 60 words per minute (wpm). To test t

he claim, a random sample of 50 workers from the agency were given a typing test, and the average typing speed was 58.8 wpm. A one-sample tt-test was conducted to investigate whether there is evidence that the mean typing speed of workers from the agency is less than 60 wpm. The resulting p-value was 0.267.
1. Which of the following is a correct interpretation of the p-value?
A. The probability is 0.267 that the mean typing speed is 60 wpm or more for workers from the agency.
B. The probability is 0.267 that the mean typing speed is 60 wpm or less for workers from the agency.
C. The probability is 0.267 that the mean typing speed is 58.8 wpm or less for workers from the agency.
D. If the mean typing speed of workers from the agency is 60 wpm, the probability of selecting a sample of 50 workers with mean 58.8 wpm or less is 0.267.
E. If the mean typing speed of workers from the agency is less than 60 wpm, the probability of selecting a sample of 50 workers with mean 58.8 wpm or less is 0.267.
Mathematics
1 answer:
andriy [413]3 years ago
6 0

Answer:

B. The probability is 0.267 that the mean typing speed is 60 wpm or less for workers from the agency.

Explanation:

P-value=0.267

Alternative hypothesis is left tailed.

The probability is 0.267 that the mean typing speed is 60 wpmwpm or less for workers from the agency.

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Statement:

"If two sides of a triangle are congruent, then the angles opposite of them are congruent"

Converse:

If two angles of a triangle are congruent, then the two sides opposite them are congruent.

The converse of the statement is true and can be proven true using a two-column proof. In fact it is a theorem.

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2 years ago
Which expression is equivalent to 36+18<br><br> A: 3(12+6) <br> B:6(6+18)<br> C:3(33+6)<br> D:6(6+2)
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3(12 + 6) gives you 36 + 18 because 3 times 12 is 36 and 3 times 6 is 18
3 0
3 years ago
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You and your friend each collect rocks and fessis your friend collects three times as many roots and half as many fossils as you
n200080 [17]

Answer:

Number of rocks and fossils collected by you is <u>1 and  24</u> respectively

Number of rocks and fossils collected by your friend is <u>3 and 12 </u>respectively

Step-by-step explanation:

Let  the number of Rocks you collect be x

Let  the number of Fossils you collect be y

Then the total number pf objects you collected will be

x + y = 25

x = 25 - y------------------------------(1)

Your friend collects three times as many rocks and half as many fossils as you.

This can be written as

3x + y (1/2) = 15

3x + (y/2) = 15-------------------(2)

Substituting (1) in (2)

3(25 - y) + (y/2) = 15

75 - 3y + (y/2) = 15

Grouping the like terms we get,

75 - 15 = 3y = (y/2)

60 = ( 6y - y /2)

60 x 2 = 6y -y

120 = 5y

y = 120/5

y = 24

Substituting  y value in equation(1) we get

x = 25 - 24

x= 1

y= 24

Friends collects 3 times rock

so collects 3x =3(1) = 3rocks

Also he collects half as many fossils

That is

y/2 = 24/2 = 12 fossils

<u><em>Hope this help you! :)</em></u>

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2 years ago
Which graph represents the linear function y=1/5x-2​
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Answer: The second one

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3 years ago
Do you compare a negative decimal to a positive decimal?
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Answer:

Positive: Decimals are a part of a whole just like fractions are a part of a whole. Therefore, a positive decimal is always greater than a negative decimal.

Negative: When you have two negative decimals, the one closer to zero is always greater. The farther a negative decimal is from zero, the smaller its value.

All of it put together (same text as above):

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5 0
3 years ago
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