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PSYCHO15rus [73]
3 years ago
13

A randomly selected sample of college basketball players has the following heights in inches.

Mathematics
1 answer:
Romashka [77]3 years ago
5 0

Answer:

__63.81 inches__< μ <___65.87 inches__

Step-by-step explanation:

To calculate at 95% confidence interval, we need the Mean of the sample= 64.84

Sample size=32

Standard Deviation=2.9592

95% Confidence Interval: 64.84 ± 1.03

(63.81 inches to 65.87 inches)

"With 95% confidence the population mean is between 63.81 and 65.87, based on 32 samples."

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Ms. Peters drove from her home to the park
worty [1.4K]

It takes 15 minutes for Ms. Peter to drive from park to her home

Given :

from her home to the park at an average speed of 30 miles per hour and

returned home along the same route at an average speed of 40 miles per hour

it takes 20 minutes to travel

Convert 20 minutes in to hour (divide by 60)

20 minutes = 1/3 hour

We know that distance = speed x time

 From home to park, distance  =speed \cdot time =30 \cdot \frac{1}{3} =10 miles

So , distance between home  and park is 10 miles

Now we calculate the time taken to return from park to home

time taken =\frac{distance}{speed} =\frac{10}{40}=\frac{1}{4}\\

Time taken is 1/4 hours. Convert it into minutes by multiplying by 60

\frac{1}{4} \cdot 60=15

So it takes 15 minutes for Ms. Peter to drive from park to her home

Learn more : brainly.com/question/18839247

5 0
2 years ago
A:b 1:5 a:c 2:1 how many times is b bigger than c ?
Ronch [10]

Answer:

b is 10 times greater

Step-by-step explanation:

If we multiply the first ratio by 2/2, we get 2/10. Since b=10 and c=1, b is 10 times greater.

3 0
3 years ago
The length of a pen is 5 more than its width.The perimeter is 26 m.Find the length and the width.
meriva
P=2l+2w

Since it is given that P=26m, length is 5 more than its width (w+5), we'll work it out in the perimeter formula.

26=2(w+5)+2w
26=2w+10+2w
26=4w+10
4w=26-10
4w=16
w=4

Thus the width is 4m. Let's find the length.

l=w+5
l=4+5
l=9

The length of a pen is 9m.
4 0
3 years ago
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spayn [35]

Answer:

1) y= -.5

2)y= 7

3)x= -2

4 0
3 years ago
How does a dot plot help you describe a data set
REY [17]
A dot plot shows results from a range of data, giving it coordiantes so you can plot it on a graph
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3 years ago
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