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wlad13 [49]
4 years ago
15

A researcher wants to determine if birthweights of children born to U.S. mothers is affected in any way when large megadoses of

caffeine are consumed routinely by the mother during pregnancy. It is known that the birthweights are normally distributed with mean 7.5 pounds and standard deviation 1 pound. When drawing a sample of size 40 from such a population, and computing the mean birthweight in the sample, use the Central Limit Theorem to find the 2.5-th percentile of the distribution of sample means.
Mathematics
1 answer:
Gnesinka [82]4 years ago
5 0

Answer:

7.19

Step-by-step explanation:

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7th grade math help 10 puts thanks in advance
Ludmilka [50]

Answer:

m<1= 61

m<2= 119

m<3= 61

m<4= 119

m<5= 119

m<6= 61

m<7= 119

hope this helped :)

Step-by-step explanation:

7 0
3 years ago
In a collision, a 5 kg mass moving at 2m/s transfers all of its momentum to a 1 kg mass. What is the velocity of the 1kg mass af
statuscvo [17]
Answer:
velocity = 10 m/sec in the same direction as the first body did

Explanation:
The momentum of the body can be calculated as follows:
momentum = mass * velocity

For the first body, we have:
mass = 5 kg
velocity = 2 m/sec
momentum = mass * velocity
momentum = 5 * 2 = 10 kg.m/sec

We know that this momentum is transferred completely to the second body

For the second bode, we have:
momentum = 10 Kg.m/sec
mass = 1 kg
momentum = mass * velocity
10 = 1 * velocity 
velocity = 10/1
velocity = 10 m/sec

Finally, we should get the direction of the motion:
Both the velocity of the first and second bodies have positive values. Therefore, the second body is moving in the same direction as the first body did.

Hope this helps :)
6 0
3 years ago
Read 2 more answers
At the U.S. Open Tennis Championship a statistician keeps track of every serve that a player hits during the tournament. The sta
Tamiku [17]

At the U.S. Open Tennis Championship a statistician keeps track of every serve that a player hits during the tournament. The statistician reported that the mean serve speed of a particular player was 95 miles per hour. Suppose that the statistician indicated that the serve speed distribution was skewed to the left. Which of the following values is most likely the value of the median serve speed? Explain your answer.

C) 77 mph

5 0
4 years ago
If anyone can answer this thank you!!
alexdok [17]

Answer:

3.4886

Step-by-step explanation:

3.4886 or about 3.5

3 0
3 years ago
Evaluate the limit. lim x-positive infinity 8n^2 +5n +2/3+2n
Zolol [24]

Answer: 3

Step-by-step explanation:

So in summary, if the highest degree in the numerator and denominator equal, you can use the coefficients to determine the limit, if the highest degree in the numerator is larger than the highest degree of the denominator, the limit will be infinity.

5 0
3 years ago
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