Answer:
46
edit: i made a mistake on my multiplication for the previous answer
Answer: The margin of error E = 0.0104
Step-by-step explanation:
The formula to find the margin of error that corresponds to the given statistics and confidence level for population proportion is given by :-
, where
n= Sample size
= Sample proportion
z* = critical value.
As per given , we have
n= 3200
Confidence level : 90%
The critical z-value for 90% confidence is z* = =1.645[By z-table]
Substitute all values in the formula , we get
Hence, the margin of error E = 0.0104
Range increases. This is because range is the biggest number minus the smallest number. So when the biggest number is much bigger than the rest of the numbers, the range increases.
Answer:
Betty had 45 minutes to take her test in mixed number form it is
Step-by-step explanation:
1 hour
1/4 an hour = 15 minutes
1/2 an hour is 30 minutes
1 hr 15- 30= 45
45= 3/4 of and hour remaining to test
Answer:
x = 7.3
Step-by-step explanation:
area = base × height / 2
21.9 = 6 × x / 2
43.8 = 6x
x = 7.3