A one year membership to a gym costs $725. The registration fee is $125, and the remaining amount is paid monthly. Defibr a vari
2 answers:
Answer:
The required equation is .
Monthly payment = $50
Step-by-step explanation:
It is given that one year membership to a gym costs $725. The registration fee is $125, and the remaining amount is paid monthly.
Total membership fee = $725
Registration fee = $125
Let the monthly fee is x.
We know that,
1 year = 12 months
Total amount of 12 monthly payment = 12x
Registration fee + Monthly payment = Total membership fee
Subtract 125 from both sides.
Divide both sides by 12.
Therefore, new members should pay $50 each month.
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Answer:
a: 0.8884
b: 0.9934
Step-by-step explanation:
We have µ = 300 and σ = 70. The sample size, n = 125.
For the sample to be within 8 units of the population mean, we would have sample values of 292 and 308, so we want to find:
P(292 < x < 308).
We need to find the z-scores that correspond to these values using the given data. See attached photo 1 for the calculation of these scores.
We have P(292 < x < 308) = 0.8884
Next we want the probability of the sample mean to be within 17 units of the population mean, so we want the values from 283 to 317. We want to find
P(283 < x < 317)
We need to find the z-scores that correspond to these values. See photo 2 for the calculation of these scores.
We have P(283 < x < 317) = 0.9934
