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vfiekz [6]
3 years ago
7

What is (7y+6x)(−7y-6x)

Mathematics
1 answer:
EleoNora [17]3 years ago
4 0
See attache picture for answer

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Three times a certain number, n, is 21​
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a) The mean age of graduate students at a University is at most 31 y ears with a standard deviation of two years. A random sampl
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Answer:

A.)

H0: μ ≤ 31

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C.)

Right tailed test

D.)

If Pvalue is less than or equal to α ; we reject the Null

Step-by-step explanation:

The significance level , α = 0.01

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B.)

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H1: μ < 16

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Alternative hypothesis, fluid contains less than 16

One sample t - test

C.)

Null hypothesis :

H0 : μ ≤ 12

. The direction of the sign in the alternative hypothesis signifies the type of test or tht opposite direction of the sign in the null hypothesis.

Hence, this is a right tailed test ; Alternative hypothesis, H1 : μ > 12

d.)

If Pvalue is less than or equal to α ; we reject the Null.

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The Jones family spends $600 per month on groceries for their family. If this is 15% of their monthly budget, then what is their
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Step-by-step explanation:

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