Answer: We are 95% confident that the mean SPF level of sunscreen used by all Cal Poly students is between 29.0813 and 40.0187.
Step-by-step explanation:
Given : Significance level :
Sample size : n= 52 , which is a large sample (n>30), so we use z-test.
By using z-value table,
Critical value:
Sample mean :
Standard deviation :
The confidence interval for population means is given by :-
i.e.
Now, the 95% confidence interval for the ppopulation mean = . (29.0813, 40.0187)
Hence, We are 95% confident that the mean SPF level of sunscreen used by all Cal Poly students is between 29.0813 and 40.0187.
Answer-
<u>Savings Account</u>
Earl +763
Jim +547
_________
total= 1,310$
so it should just be the difference in amounts
$763 - $547= $216
ANSWER= $216
Step-by-step explanation:
Answer:
4096 is the simplified form of
Option: B
Step-by-step explanation:
Given that
represents 2 to the power 3 that means the number appears three times in multiplying.
represents 2³ to the power 4 means the number 4 appears four times in multiplying.
Hence the simplified form of is 4096.
Answer:
no
Step-by-step explanation:
Answer:
326.85 inches squared
Step-by-step explanation:
A=πr^2
Pi * 10.2 ^2