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UNO [17]
3 years ago
5

Assume that the following confidence interval for the difference in the mean length of male​ (sample 1) and female babies​ (samp

le 2) at birth was constructed using independent simple random samples. What does the confidence interval suggest about the difference in length between male babies and female​ babies?
−0.2 in. < μ1- μ2 <1.7 in.
a female babies are longerb male babies are longerc there is no difference in the length between male and female babies
Mathematics
1 answer:
mafiozo [28]3 years ago
3 0

Answer:

c.  There is no difference in the length between male and female babies

Step-by-step explanation:

When a confidence interval contains a zero, then there is no statistically significant different between the two group means because this means that there is a zero in the difference between the groups and a zero in the difference means there is no difference.

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A car costs £5000 when new. Each year the value decreases by 20%. Person A said that the car would be worth nothing in 5 years.
den301095 [7]

Answer:

£1638.40

Step-by-step explanation:

Step one:

Given data

A car costs £5000 when new

Each year the value decreases by 20%.

Step two:

let us compute the worth in the next 5 years

year 1

worth= 5000- 0.2*5000

worth= 5000-1000

worth=  £4000

year 2

worth= 4000- 0.2*4000

worth= 4000-800

worth=  £3200

year 3

worth= 3200- 0.2*3200

worth= 3200-640

worth=  £2560

year 4

worth= 2560- 0.2*2560

worth= 2560-512

worth=  £2048

year 5

worth= 2048- 0.2*2048

worth= 2048-409.6

worth=  £1638.40

The person is wrong because after 5 years the car is worth  £1638.40

4 0
3 years ago
Mrs. Spina bought 4 boxes of 8 pork chops. She set aside 12 and separated the rest into packs of4 to freeze. How many packs of c
allsm [11]

Step-by-step explanation:

Number of pork chops Mrs Spina bought =

Number of boxes x number of pork chops per box

= 4x8

= 32

Number of Pork chops to freeze = 32 - 12 (set aside) = 20

Number of packs of pork chops to freeze = Number of pork chops to freeze / pork chops per pack

= 20/4

= 5 packs.

7 0
2 years ago
I need help with the question 3+p=8 please
andreyandreev [35.5K]
3 + p = 8...subtract 3 from both sides
p = 8 - 3
p = 5
3 0
3 years ago
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Explain how to use basic facts and number patterns to find 5,600 divide by 7
Charra [1.4K]
5600 can be simplified. Say you were to just take the two zeros off the end and you would have 56. Now divide 56 by 7 and you get 8. Add the zeros back to the 8 and your answer is 7 x 800. Hope this helps.
5 0
3 years ago
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I need an equation for: what number is 70% of 120
kifflom [539]
You'll have to multiply 0.7 by 120.

120*0.7 = n

n is the number that is 70% of 120

120 * 0.7 = 84

Hope this helps :)
8 0
3 years ago
Read 2 more answers
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