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hram777 [196]
3 years ago
15

H

Mathematics
1 answer:
Luden [163]3 years ago
7 0
Is this just free points or is there a question
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The mean number of hours of part-time work per week for a sample of 526526 college students is 2828. If the margin of error for
sveta [45]

Answer:

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

Step-by-step explanation:

A confidence interval has the following format.

\mu_{x} \pm M

In which \mu_{x} is the mean of the sample and M is the margin of error.

In this problem, we have that:

\mu_{x} = 28, M = 2.2

\mu_{x} - M = 28 - 2.2 = 25.8

\mu_{x} + M = 28 + 2.2 = 30.2

The 99% confidence interval for the mean number of hours of part-time work per week for all college students is between 25.8 and 30.2.

4 0
3 years ago
In Figure 1, the area of square A is 9 square units, the area of square B is 16 square units, and the area of square C is 25 squ
weqwewe [10]

Answer:

C. The sum of the areas of the two smaller squares is equal to the area of the larger square.

Step-by-step explanation:

9 + 16 = 25

36 + 64 = 100

25 + 144 = 169

The relations "less than" and "greater than" can be ruled out. These observations are consistent with selection C.

The triangle area is half the product of the square roots of the squares on the legs, so the areas of the triangles are (respectively) 6, 24, 30. These are not related to the sum of the smaller squares, so the last selection can also be ruled out.

7 0
3 years ago
Read 2 more answers
A small stock brokerage firm wants to determine the average daily sales (in dollars) of stocks to their clients.A sample of the
Verizon [17]

Answer:

Step-by-step explanation:

Download docx
7 0
3 years ago
The total change in Mr. Belt's checking account as a result of three cable bills was -
Gelneren [198K]

B

Step-by-step explanation:

312.99 divided by 3 equals 104.33 nothing in his account changed except the 312.99

6 0
3 years ago
Mr. Seidel filled up his 14-gallon gas tank for $44.26. What was the price per gallon of gas - to the nearest hundredth?
Nataly_w [17]

Answer:

$3.616

Step-by-step explanation:

4 0
3 years ago
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