A company is testing 2 lists and requires accuracy at 95% degree of confidence. Current response rates for similar lists have recently been in the region of 5% What sample size is needed for the result to be in a range of ±1% of the actual response rate

1.   ?    Depends on the size of the population concerned
2.   ?    1,824
3.   ?    45,125
4.   ?    4,750

The company decides to go for the sample identified in Q1 and the test produces a response of 8%. Within what range can we be 95% confident of the actual response rate?

1.   ?    Depends on the size of the population concerned
2.   ?    8% + or - 1.24
3.   ?    8% + or - 0.26
4.   ?    8% + or – 0.79

In a marketing experiment, the experimental group:

1.   ?    is exposed to the experimental variable
2.   ?    is not exposed to the experimental variable
3.   ?    never has any measurement of variables conducted within it
4.   ?    is an A/B split

Your market share was 15% last year and based on a random sample of 300 consumers this year it appears to have fallen to 7%. The standard error here is

1.   ?    1.21
2.   ?    1.65
3.   ?    3.88
4.   ?    2.06

The Z value of this 7% sample result is

1.   ?    1.21
2.   ?    1.65
3.   ?    3.88
4.   ?    2.06