Answer:
56.52mm
Step-by-step explanation:
The one wall would be 13 feet long.
13+13+13+13= 52 feet.
Standard error of the mean is computed by:
Standard error = SD/ sqrt N
Where:
N is the sample size
SD is the standard deviation
To get the standard deviation, you need to get the sqrt of
the variance = sqrt 9 = 3
So plugging in our data:
Standard error = 3 / sqrt (16)
= 0.75
Im assuming you mean 20pence? if so its 5 twenty pence in a pound so times 5 by 9 gives you 45
so there are 45 twenty pence in £9
Answer: we would reject the null hypothesis that the mean was equal to 52 at a level of significance of alpha = 0.05.
Step-by-step explanation:
The null hypothesis is the hypothesis that is assumed to be true while the alternative hypothesis is the statement that is believed to be true if the null hypothesis is rejected.
From the given information, the null hypothesis is
µ = 52
The decision rule would be to accept the null hypothesis if the level of significance is lesser than the p value and reject the null hypothesis if the level of significance is greater than the p value
Since alpha, 0.05 > than the p value, 0.016, then we would reject the null hypothesis.
