Mathematics: John can type 45 words per min (45/min) he has to type a report for Mrs. Ramey that must be 2700 words. How many hours will it take time to type the report?

John can type 45 words per min (45/min) he has - id45457795941, leslymejiaquiroz1

ikgopoleng8815

02.02.2022

It will take 1 hour to type the report.

Step-by-step explanation:

The time that will take to John to type the report is:

$\frac{1 min}{45 w}*2700 w = 60 min$

Since we have 60 minutes in 1 hour, the time in hours is:

$\frac{1 h}{60 min}*60min = 1 h$

Therefore, it will take 1 hour to type the report.

I hope it helps you!

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ckolliegbo

15.05.2023

$t_{stat} = -2.03$

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 16 days = 384 hours

Sample mean, $\bar{x}$ = 15 days 10 hours = 370 hours

Sample size, n = 19

Sample standard deviation, s = 30 hours

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 384\text{ hours}\\H_A: \mu < 384\text{ hours}$

We use one-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$t_{stat} = \displaystyle\frac{370 - 384}{\frac{30}{\sqrt{19}} } = -2.03415 \approx -2.03$

The value of t-statistic is -2.03

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