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Kruka [31]
3 years ago
11

2. The welght, In pounds, of a baby In the first sis, onths of life can be modeled by

Mathematics
1 answer:
erastovalidia [21]3 years ago
5 0

Answer:

D. 14.5

Step-by-step explanation:

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The manager of a paint supply store wants to estimate the actual amount of paint contained in 1​-gallon cans purchased from a na
lorasvet [3.4K]

Answer:

a. 95​% confidence interval estimate for the population mean amount of paint included in a​ 1-gallon can is 0.998±0.0055

b.  <u>No,</u> because a​ 1-gallon paint can containing exactly​ 1-gallon of paint lies <u>within</u> the 95​% confidence interval.

c. Yes.  The population amount of paint per can is assumed normally distributed, because confidence interval calculations assume normal distribution of the parameter.

d. 90% confidence interval is 0.998±0.0046. ​The answer in b. didn't change; 1-gallon paint can containing exactly​ 1-gallon of paint lies <u>within</u> the 90​% confidence interval. The manager <u>doesn't have</u> a right to complain to the manufacturer.

Step-by-step explanation:

Confidence Interval can be calculated using M±ME where

M is the sample mean amount of paint per 1​-gallon can (0.998 gallon)

ME is the margin of error from the mean

And margin of error (ME) can be calculated using the equation

ME=\frac{z*s}{\sqrt{N} } where

  • z is the corresponding statistic in the 95% confidence level (1.96)
  • s is the sample standard deviation (0.02 gallon)
  • N is the sample size (50)

Then ME=\frac{1.96*0.02}{\sqrt{50} }≈0.0055

95% confidence interval is 0.998±0.0055

90% confidence interval can be calculated similary, only z statistic is 1.64.

ME=\frac{1.64*0.02}{\sqrt{50} }  ≈0.0046

90% confidence interval is 0.998±0.0046

8 0
3 years ago
I'll appreciate you help
sweet [91]
The answer is d the height of the water increases 2.5 inches per second
4 0
3 years ago
Read 2 more answers
Is the graph increasing, decreasing, or constant?
Tju [1.3M]

Answer:

C. Decreasing

Step-by-step explanation:

The graph is decreasing because the graphed line read from left to right is slanting down.

Hope this helps!

If not, I am sorry.

5 0
2 years ago
Read 2 more answers
Jacob makes 20 baskets for every 35 times he shoots the ball. What is the ratio of baskets he makes to baskets he misses? Write
Kipish [7]

Answer:

ratio = 4/3 = 1.3333

Step-by-step explanation:

If Jacob makes 20 baskets for every 35 times he shoots the ball, that means he misses 35 - 20 = 15 shoots for every 35 shoots.

So, to calculate the ratio of baskets he makes to baskets he misses, we just need to divide these values:

baskets he makes = 20 for every 35

baskets he misses = 15 for every 35

ratio = 20 / 15 = 4 / 3 = 1.3333

8 0
3 years ago
I need help answering this
Lapatulllka [165]

Answer:

False

Step-by-step explanation:

165 - 90 = 75 + 40 = 115

115 is not the same as 165

3 0
3 years ago
Read 2 more answers
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