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Vilka [71]
2 years ago
11

Thank you for answering this question.

Mathematics
1 answer:
vagabundo [1.1K]2 years ago
8 0

Answer: Hope this helps :)

Step-by-step explanation:

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satela [25.4K]
The effect of decreasing the alpha level from 0.05 to 0.01. it decreases the probability that the sample will fall into the critical region, it decreases the probability of a Type I error, and it decreases the size of the critical region.
Therefore, the answer is that all of other options are results of decreasing alpha.
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4 years ago
Each of 12 refrigerators of a certain type have been returned to a distributor because of the presence of a high pitched oscilla
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Answer:

a) P(X = 5) = 0.04397

b) The probability that X exceeds its mean by more than 1 standard deviation = P(z > 1) = 0.159

Step-by-step explanation:

a) This question can be solved using binomial distribution function formula

Using Binomial,

P(X = x) = ⁿCₓ pˣ qⁿ⁻ˣ

n = total number of sample spaces = number of refrigerators to be examined before getting 5 refrigerators with defective compressors = 6

x = Number of successes required = 5

p = probability of success = probability of examining a refrigerator with defective compressor out of the total 12 = 5/12 = 0.4167

q = probability of failure = probability of examining a refrigerator without defective compressor out of the total 12 = 1 - (5/12) = 7/12 = 0.5833

P(X = 5) = ⁶C₅ (0.4167)⁵ (0.5833)⁶⁻⁵

P(X = 5) = ⁶C₅ (0.4167)⁵ (0.5833) = 1(0.01256)(0.5833) = 0.04397

P(X = 5) = 0.04397

b) The probability that X exceeds its mean by more than 1 standard deviation represents Z-score of z > 1

Using the normal distribution tables,

P(z > 1) = 1 - P(z ≤ 1) = 1 - 0.841 = 0.159

3 0
4 years ago
Jorge wants to buy his father a gift that costs $32 He has already saved $18 for the gift Jorge saves the same amount of money e
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Answer: $3.50 per week

Total money needed: $32

Money saved already: $18

$32 - $18 = $14

Money left to save: $14

-

Money left to save: $14

Time left to save: 4 weeks

$14 / 4 = $3.50 per week

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly.

- Heather

8 0
2 years ago
These numbers are either whole numbers, or the negatives of whole numbers. They are called ______. Example: ... -4, -3, -2, -1,
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They are called integers

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3 years ago
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Calculate the slope look at pic. Help plz!
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0 if it is parellel to the x axis then the slope is 0
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