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Viefleur [7K]
3 years ago
6

Assuming part a is correct, how do you do b and c?

Mathematics
1 answer:
zubka84 [21]3 years ago
8 0

Step-by-step explanation:

B. Yes, we are 99% confident that the population mean is within the interval.

C. Yes, 225 is below the interval minimum, so it is reasonable to conclude the average cholesterol level is greater than 225 mg/dl.

D. No.  Increasing the sample size would decrease the margin of error, so the ends of the interval would move closer to the sample mean of 251.9.  So the interval minimum would still be higher than 225.

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How does a small outlier affect the data set?
leva [86]
A small outlier could affect the whole data set because it could reduce the mean, or make the average of the whole data set smaller.

An example would be the data set could be 1, 8, 9, 10

To find the mean you would add everything together then divide it by the number of numbers you just added together. The mean of this set would be 28/4 which equals 7. Now, if the outlier were -8 instead of 1, then the mean would be much different.

~Hope this helped!~
6 0
3 years ago
You invested ​$20,000 in two accounts paying 7% and 8% annual​ interest, respectively. If the total interest earned for the year
sasho [114]

Answer:

$7,000 at 7%; $13,000 at 8%

Step-by-step explanation

x: the amount invested at 7%

y: the amount invested at 8%

x + y = 20,000

7%.x + 8%.y = 1,530

⇒ x =7,000

y = 13,000

5 0
3 years ago
List the names and corresponding speeds from least to greatest in miles per hour. Julie 62 miles per hour manalo 311,520 feet pe
Flauer [41]
1st: 311,520 feet per second
2nd: 62 miles per hour
3rd: 1,448 meters per minute
3 0
3 years ago
Read 2 more answers
Marcus has three dowels with the lens shown in the table complete the table to give each length in inches feet and yards
marin [14]
Remember there are 3ft in a yard and 12in. in a foot.

To convert 5.5ft to yd, divide by 3.

To convert 2.5yd to ft, multiply by 3 to get 7.5ft.

To convert 7.5 ft to in, multiply by 12.

Just remember when converting to a larger quantity (yards, for example) to a small (feet, for example), you multiply, and from smaller quantity to larger, divide.
6 0
3 years ago
Answers please I just need to check my work so this is a blank one.
Blababa [14]

Answer:

Step-by-step explanation:

well i would but i cnt see this

8 0
4 years ago
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