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Vilka [71]
2 years ago
12

Having trouble with this, help please? I will give brainliest.

Mathematics
1 answer:
yaroslaw [1]2 years ago
4 0

Answer:

a)     7x-15=20

b)   \frac{20+15}{7}

c)  5

Step-by-step explanation:

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Nuetrik [128]

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Option a) Type I error would occur if we reject null hypothesis and conclude that the average amount is greater than $3,200 when in fact the average amount is $3,200 or less.        

Step-by-step explanation:

We are given the following information in the question:

H_{0}: \mu \leq \$3,200\\H_A: \mu > \$3,200

where μ is the average amount of money in a savings account for a person aged 30 to 40.

Type I error:

  • Type I error is also known as a “false positive” and is the error of rejecting a null  hypothesis when it is actually true.
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Thus, in the above hypothesis type  error will occur when we reject the null hypothesis even when it is true.

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