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Kruka [31]
3 years ago
12

Indicate whether the following question is a statistical question. Explain why or why not.

Mathematics
1 answer:
Dimas [21]3 years ago
8 0
It’s a question because there is not value of time.
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What is the mean score Score<br> 90<br> 80<br> 70<br> 60
cupoosta [38]

Answer:

75

Step-by-step explanation:

Four scores....  add them together and divide by four

 (90 + 80 + 70 + 60) / 4 = 75

8 0
2 years ago
To help consumers assess the risks they are taking, the Food and Drug Administration (FDA) publishes the amount of nicotine foun
QveST [7]

Answer:

We conclude that  the mean nicotine content is less than 31.7 milligrams for this brand of cigarette.

Step-by-step explanation:

We are given the following in the question:  

Population mean, μ = 31.7 milligrams

Sample mean, \bar{x} = 28.5 milligrams

Sample size, n = 9

Alpha, α = 0.05

Sample standard deviation, s =  2.8 milligrams

First, we design the null and the alternate hypothesis

H_{0}: \mu = 31.7\text{ milligrams}\\H_A: \mu < 31.7\text{ milligrams}

We use One-tailed t test to perform this hypothesis.

Formula:

t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n}} }

Putting all the values, we have

t_{stat} = \displaystyle\frac{28.5 - 31.7}{\frac{2.8}{\sqrt{9}} } = -3.429

Now, t_{critical} \text{ at 0.05 level of significance, 8 degree of freedom } = -1.860

Since,                  

t_{stat} < t_{critical}

We fail to accept the null hypothesis and accept the alternate hypothesis. We conclude that  the mean nicotine content is less than 31.7 milligrams for this brand of cigarette.

3 0
3 years ago
keith is an independent filmmaker . hes planning to serve pizza and sub sandwiches at his first film debut . the number of sandw
tamaranim1 [39]

Answer:

35 sandwiches

Step-by-step explanation:

62÷2=31

31+4=35

3 0
3 years ago
What is the volume of this prism?​
vovikov84 [41]

Answer:

The answer is 13 1/8ft3

Explanation:

Substitute into the formula:

Volume = 3 1/2 x 2 1/2 x 1 1/2

= 7/2 x 5/2 x 3/2

= 105/8

= 13 1/8 ft3

8 0
2 years ago
What is the completely factored form of 2x2 – 32?
dimaraw [331]

Thank you for letting me help :)

4 0
2 years ago
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