Answer:
20 books
Step-by-step explanation:
Height of stack = 35 inches
Thickness of one book
No. of books

3 2/5 * 10 =
17/5 * 10 =
170/5 =
34.......she walks 34 miles in 10 days
Answer:
In statistics, an outlier is a data point that differs significantly from other observations.
Step-by-step explanation:
An outlier may be due to variability in the measurement or it may indicate experimental error; the latter are sometimes excluded from the data set. An outlier can cause serious problems in statistical analyses.
Answer:
The claim is not true
Step-by-step explanation:
We are given that A local retailer claims that the mean waiting time is less than 8 minutes.


A random sample of 20 waiting times has a mean of 6.3 minutes with a standard deviation of 2.1 minutes.

s = 2.1
n = 20
Since n <30 and population standard deviation is unknown
So,we will use t test
So,

t=-3.62
α = 0.01
Degree of freedom = df=n-1=20-1=19

t calculated < t critical
So, we failed to reject null hypothesis
Hence the claim is not true