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e-lub [12.9K]
2 years ago
7

Pl help it’s for a grade I will give you Brainly if right

Mathematics
2 answers:
rodikova [14]2 years ago
8 0

Answer:

b

Step-by-step explanation:

leonid [27]2 years ago
7 0

Answer:

It is the last option.

Step-by-step explanation:

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A computer software vendor claims that a new version of its operating system will crash fewer than 10 times per year on average.
Oksana_A [137]

Answer:

Step-by-step explanation:

The hypothesis is written as follows

For the null hypothesis,

µd ≤ 10

For the alternative hypothesis,

µ > 10

This is a right tailed test

Since no population standard deviation is given, the distribution is a student's t.

Since n = 97

Degrees of freedom, df = n - 1 = 97 - 1 = 96

t = (x - µ)/(s/√n)

Where

x = sample mean = 8.9

µ = population mean = 10

s = samples standard deviation = 3.6

t = (8.9 - 10)/(3.6/√97) = - 3

We would determine the p value using the t test calculator. It becomes

p = 0.00172

Since alpha, 0.01 > than the p value, 0.00172, then we would reject the null hypothesis. Therefore, At a 1% level of significance, there is enough evidence that the data do not support the vendor’s claim.

3 0
3 years ago
Six hundred and eight thousandths as a decimal
jolli1 [7]
600.008 (why does this need to be 20 things long)
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3 years ago
PLEASE HELP!! WILL MARK BRAINLIEST!! PLZ!
Svet_ta [14]

Some points are (7,3) and (-7,-5).

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Y = 2x + 1
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Cody has $700 in a savings account that pays 4% simple interest. how much will he have in one year
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