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Alika [10]
2 years ago
5

A coffee machine is considered reliable if the range of amounts of

Mathematics
1 answer:
Xelga [282]2 years ago
8 0

hi guys pls friend me i need freinds pls

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A store buys sweatshirts for $12 each and marks up the price by 25%.
lions [1.4K]

Answer:

15$

Step-by-step explanation:

this is reallly easy you just have to divide 12 by 4 since 25% = 1/4

12/4 = 3

12 + 3 = 15

Hope this helps :)

4 0
3 years ago
Which of the following represents a Type I error for the null and alternative hypotheses H0:μ≤$3,200 and Ha:μ>$3,200, where μ
Nuetrik [128]

Answer:

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.
  • In other words, this is the error of accepting an  alternative hypothesis when the results can be  attributed by null hypothesis.
  • A type I error occurs during the hypothesis testing process when a null hypothesis is rejected, even though it is correct and should not be rejected.

Thus, in the above hypothesis type  error will occur when we reject the null hypothesis even when it is true.

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.

3 0
3 years ago
I NEED HELP ASAP!!People that now the Answer help me please
lilavasa [31]

Answer:

xq xw

.......................

7 0
3 years ago
Read 2 more answers
sally earns $15 per hour waiting tables for 12 hours each week at a local cafe but on Sunday she works for 4 hours and is paid t
steposvetlana [31]

Answer:

12*15 + 4*15*1.5

180+90 = $270

Step-by-step explanation:

7 0
3 years ago
What is the area, in square centimeters of the trapezoid below?
Katen [24]

Answer:

68.8cm^2

Step-by-step explanation:

A trapezoid=h/2(b1+b2)

A trapezoid=6.4/2(12.9+8.6)

A trapezoid=3.2(21.5)

A trapezoid=68.8cm^2

8 0
3 years ago
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