X=100°
y=180°-100°-50°
=30°
Answer:
B
Step-by-step explanation:
I think it’s 6.93 but idk man ♀️♀️♀️
Answer:
450 cubic cm
So 45 probably
Step-by-step explanation:
Formula for volume of rectangular prism:
length·width·height
= 9·5·10
= 450 cm³
Answer:
The 95% confidence interval for the proportion of all shoppers during the year whose visit was because of a coupon they'd received in the mail is (0.2016, 0.2694)
Step-by-step explanation:
In a sample with a number n of people surveyed with a probability of a success of , and a confidence level of , we have the following confidence interval of proportions.
In which
z is the zscore that has a pvalue of .
For this problem, we have that:
95% confidence level
So , z is the value of Z that has a pvalue of , so .
The lower limit of this interval is:
The upper limit of this interval is:
The 95% confidence interval for the proportion of all shoppers during the year whose visit was because of a coupon they'd received in the mail is (0.2016, 0.2694)