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ElenaW [278]
3 years ago
15

Astronauts increased in height by an average of approximately 40 mm during the Apollo-Soyuz missions, due to the absence of grav

ity compressing their spines during their time in space. To find out if something similar happens on Earth, a NASA experiment measured the heights of six men immediately before a three day bed rest. By the end of the third day, they had increased in height by an average of 14 mm, with a standard deviation of 0.66 mm. Find the 95% confidence interval for the change in height after 3 days of bed rest. Express your answer as lower bound to higher bound with one decimal place. Do not include units.
Mathematics
1 answer:
Komok [63]3 years ago
4 0

Answer:idk

Step-by-step explanation:

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4. Assume that the chances of a basketball player hitting a 3-pointer shot is 0.4 and the probability of hitting a free-throw is
vovikov84 [41]

Answer:

0.0334 = 3.34% probability that the player will make exactly 3 3-pointers and 5-free throws.

Step-by-step explanation:

For each 3-pointer shot, there are only two possible outcomes. Either the player makes it, or the player does not. The same is valid for free throws. This means that both the number of 3-pointers and free throws made are given by binomial distributions.

Since 3-pointers and free throws are independent, first we find the probability of making exactly 3 3-pointers out of 10, then the probability of making exactly 5 free throws out of 10, and then the probability that the player will make exactly 3 3-pointers and 5-free throws is the multiplication of these probabilities.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Probability of making 3 3-pointers out of 10:

The chances of a basketball player hitting a 3-pointer shot is 0.4, which means that p = 0.4. So this is P(X = 3) when n = 10.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 3) = C_{10,3}.(0.4)^{3}.(0.6)^{7} = 0.21499

Probability of making 5 free throws out of 10:

The probability of hitting a free-throw is 0.65, which means that p = 0.65. The probability is P(X = 5) when n = 10.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 3) = C_{10,5}.(0.65)^{5}.(0.35)^{5} = 0.15357

Calculate the probability that the player will make exactly 3 3-pointers and 5-free throws.

0.21499*0.15537 = 0.0334

0.0334 = 3.34% probability that the player will make exactly 3 3-pointers and 5-free throws.

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The screen on Lin's cell phone allows for 8 lins of text per message. The maximum number of characters for each message is 10. H
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There will 80 characters per each line hold. Hope it help!
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4 years ago
How to solve for x where (2^x)*x =n?
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Tough call.  
You may have to use Newton's Method or something like that.
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The Smith family is traveling to visit friends. The distance to the friend's house is 276.45 miles. It takes the family 5.82 hou
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Answer:

The rate is 47.5 miles per hour   :D

Step-by-step explanation:

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