Write the the right answer and how you got to the answer. BEST ANSWER GETS BRAINLIEST
2 answers:
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Answer:
The degrees of freedom are given by:
The p value would be given by:
Since the p value is higher than 0.1 we have enough evidence to FAIl to reject the null hypothesis and we can't conclude that the true mean is less than 60
Step-by-step explanation:
Information given
60, 56, 60, 55, 70, 55, 60, and 55.
We can calculate the mean and deviation with these formulas:
Replacing we got:
represent the mean
represent the sample standard deviation for the sample
sample size
represent the value that we want to test
represent the significance level
t would represent the statistic
represent the p value
Hypothesis to test
We want to test if the true mean is less than 60, the system of hypothesis would be:
Null hypothesis:
Alternative hypothesis:
The statistic would be given by:
(1)
Replacing the info we got:
The degrees of freedom are given by:
The p value would be given by:
Since the p value is higher than 0.1 we have enough evidence to FAIl to reject the null hypothesis and we can't conclude that the true mean is less than 60
sorry it won't let me show step by step but your answer is 150x-17
Answer:
The correct option is E. 16 min 12 sec.
Step-by-step explanation:
Consider the provided information.
When the readout indicated 24 min 18 sec, she had completed 10% of her exercise session.
That means 24 min 18 sec is 90% of her exercise time.
First convert the 24 min 18 sec into seconds:
24 min 18 sec = 1440+18 = 1458 seconds
Let x represents the 100%.
That means the total time of workout was 1620 seconds or 27 minutes.
Now she had completed 40% of her exercise session, that means the readout will indicate 60% of the time.
Calculate the 60% of 1620 as shown:
Now convert 972 seconds into minutes as shown:
972 seconds = 960 seconds + 12 seconds = 16 min 12 seconds
Hence, the correct option is E. 16 min 12 sec.