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Nookie1986 [14]
2 years ago
7

The 5 students in Mrs. Jackson's class were asked how many minutes it takes them to get to school in the morning. Here is what t

hey answered. 11, 3, 7, 9, 12 Find the mean and median travel times for these students. If necessary, round your answers to the nearest tenth.
Mathematics
1 answer:
saveliy_v [14]2 years ago
3 0

Answer:

the mean in all of the numbers added together devided by how many numbers there are so it would be 8.4, and the median is the middle so it would be 9.

Step-by-step explanation:

your welcome

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The product of 5 and a number x is 1/4 What is the value of x?
attashe74 [19]

Answer:

x=19/4

Step-by-step explanation:

The product of 5 and a number x is 1/4

8 0
3 years ago
Fewer young people are driving. In year A, 67.9% of people under 20 years old who were eligible had a driver's license. Twenty y
aleksley [76]

Answer:

                                 Case a                               Case b

margin of error       0.0216                                   0.0231

Interval estimate   (0.7016 , 0.6795)                (0.5031 , 0.4569)

margin of error is not same in both cases.

Step-by-step explanation:

a

At 95% confidence interval the interval estimate of number of 20 year old drivers in year A can be computed as

  p'  ±  z  \sqrt{\frac{p'(1-p')}{n} }

= 0.68 ± 1.96 \sqrt{\frac{0.68(1-0.68)}{1800} }

= 0.7016 , 0.6795

the margin of error can be written as

z  \sqrt{\frac{p'(1-p')}{n} }

= 1.96 \sqrt{\frac{0.68(1-0.68)}{1800} }

= 0.0216

b

At 95% confidence interval the interval estimate of number of 20 year old drivers in year B can be computed as

p'  ±  z  \sqrt{\frac{p'(1-p')}{n} }

= 0.48 ± 1.96 \sqrt{\frac{0.48(1-0.48)}{1800} }

=  0.5031 , 0.4569

the margin of error can be written as

z  \sqrt{\frac{p'(1-p')}{n} }

=  1.96 \sqrt{\frac{0.48(1-0.48)}{1800} }

= 0.0231

c

Sample size is same in case A and B but proportion is different in both cases so margin of error is different in both cases

3 0
3 years ago
What is 7/8 of 2121?
valkas [14]

Answer:

1855.875

Step-by-step explanation:

All you have to do is multiply them together.

HOPE this helped!!

4 0
3 years ago
The rectangular frame is made from 5 straight pieces of metal. 6 m 8 m The weight of the metal is 1.5 kg per metre. Work out the
Stella [2.4K]

Answer:

I don't get your question pls

5 0
2 years ago
Tina and her sister ,Kelly, both make orange juice by taking the frozen concentrate their mom buys and mixing it with water in a
dybincka [34]

Answer:

Tina's pitcher has a stronger orange flavor.

Step-by-step explanation:

3 0
3 years ago
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