Answer: 1.467
Step-by-step explanation:
Formula of Margin of Error for (n<30):-
Given : Sample size : n= 22
Level of confidence = 0.90
Significance level :
By using the t-distribution table ,
Critical value :
Standard deviation:
Then, we have
Hence, the margin of error for the confidence interval for the population mean with a 90% confidence level =1.467
Answer:
Sample size = n = 37
Now we are supposed to find that the mean number of calls per salesperson per week is more than 42?
Since n > 30 so we will use z test
Formula :
Substitute the values
Z value at 0.100 is 1.64
Since the calculated z value is greater than the defined z value
So, we accept the null hypothesis
Hence we conclude that the mean number of calls per salesperson per week is not more than 42
Answer:
11/32
Step-by-step explanation:
4/16 + 2/16 - 1/32
simplify and solve
Answer:
Option A -8/3
Step-by-step explanation:
The complete question in the attached figure
we know that
Sasha started at sea level and has hiked down to the fourth rest station.
Remember that sea level is 0.
Sasha takes a break at the rest stations every 2/3 of a mile.
That means-----> Sasha is down 4 times 2/3
But the answer will be in negative as she is below 0.
therefore
Sasha’s elevation now is -8/3 miles below sea level.