Withdrawing $10 every week from an outstanding balance of $400
2 answers:
Answer:
.
Step-by-step process:
Let w denote the number of weeks.
We need to formulate an expression for the scenario detailed in the word problem.
The withdrawal amount is $10 each week, therefore the total amount withdrawn over w weeks is .
The remaining amount after w weeks will be $400 minus .
Consequently, the expression we seek is .
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Answer:
At the α = 0.10 level, there is no substantial evidence indicating that the average vertical jump for students at this school differs from 15 inches.
Step-by-step explanation:
A hypothesis test is necessary to verify the assertion that the average vertical jump of students diverges from 15 inches.
The null and alternative hypotheses are:
The significance level is set at 0.10.
The sample mean recorded is 17, and the sample standard deviation is 5.37.
The degrees of freedom are calculated as df=(20-1)=19.
The t-statistic is:
The two-tailed P-value corresponding to t=1.67 is P=0.11132.
<pSince this P-value exceeds the significance level, the result is not significant. Therefore, the null hypothesis remains unchallenged.At the α = 0.10 level, there is no compelling evidence that the average vertical jump of students at this school deviates from 15 inches.