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lubasha [3.4K]
2 years ago
12

Could anyone help me with these questions ASAP?

Mathematics
1 answer:
FrozenT [24]2 years ago
5 0

8 is b because a circle is 360.

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An automobile manufacturer claims that its van has a 44.3 miles/gallon (MPG) rating. An independent testing firm has been contra
natulia [17]

Step-by-step explanation:

H0: u = 44.3

Hi : u# 44.3

Z1-0.05/2

Z1-0.025

Z0.975 = 1.96

Z = x-u/s.d/√n

Z= 44.4 -44.3/2.6/√130

Z = (0.1×11.4018)/2.6

Z=0.44

Since the calcalculated value is less than the table value and does not fall in the rejection region we fail to reject the null hypothesis

7 0
3 years ago
A food scientist takes a random sample of 25 cereals in order to test the claim that the mean fiber content is less than 2.5 gra
Jlenok [28]

Answer:

Choice A: there is insufficient evidence to conclude that the mean for the fiber content is less than 2.5 gms.

Step-by-step explanation:

From the graphs given the more appropriate is one sample t- test

One sample t- test is used and the results are

Hypothesis Test                       Fiber

Sample Mean                          2.62

Sample St. Dev                       3.492

Degrees of Freedom              24

t- test statistic                         0.1718

p- value                                    0.5675

the critical region for this test at ∝= 0.05 is t < -1.711

There is not enough evidence to reject the null hypothesis.

Since the calculated t=   0.1718 does not fall in the critical region the null hypothesis is accepted that the mean fiber content is not  less than 2.5 grams.T

6 0
3 years ago
State the properties of the Normal Probability Distribution<br> in own word.
dybincka [34]

Answer:

he mean, mode and median are all equal. The curve is symmetric at the center (i.e. around the mean, μ). Exactly half of the values are to the left of center and exactly half the values are to the right. The total area under the curve is 1.

Step-by-step explanation:

4 0
3 years ago
A 3-column table has 1 row. The first column is labeled Age with entry 7 years. The second column is labeled Mean with entry 49
alexandr1967 [171]

Answer:

47-51

45-53

43-55

Step-by-step explanation:

6 0
3 years ago
A use bike costs $75 a new one costs $300. how many times more expensive is a new bike compare with a use bime
Alisiya [41]

Answer:

jvjdebsjd bjiweibqewasje

Step-by-step expla

3 0
2 years ago
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