WPC 300 Exam Answers New Update (A+ Pass)
which of the following propostiton describes an existing theory or belief in a population - Answers - null hypothesis
if the confidence level is 98%, what is the margin of error in your statistical test - Answers - 2%
the one-sample z-statistics is...
WPC 300 Exam Answers New Update
(A+ Pass)
which of the following propostiton describes an existing theory or belief in a population -
Answers -✔✔ null hypothesis
if the confidence level is 98%, what is the margin of error in your statistical test -
Answers -✔✔ 2%
the one-sample z-statistics is used instead of the one-sample t-statistics when -
Answers -✔✔ when sigma is known
sample of size 25 are selected from a population with mean 40 and standard deviation
5. the mean of the sample mean distribution is - Answers -✔✔ 8
for multiple mean comparison, which of the following method is better when sample
sizes are unequal? - Answers -✔✔ tukey's
sampling error occurs when_____________ is not true representation of the population
- Answers -✔✔ sample
The wpc sports company has noted that the size of individual customer order is
normally distributed with a mean of $100 and standard deviation of $12. IF a soccer
team of 16 players were to make the next batch of orders, what would be the standard
error of the mean? - Answers -✔✔ 3
Sample of size 25 are selected from a population with mean 40 and standard deviation
5. the standard error of the sample mean distribution is - Answers -✔✔ 1
The literary digest's prediction of the presidential election of 1936 was wrong because -
Answers -✔✔ SAMPLE WAS NOT REPRESENTATIVE OF THE POPULATION
With a 5% margin of error, in order to reject the null hypothesis, the p-value should be -
Answers -✔✔ greater than .05
If the p-value is below .05, what can we say about the null hypothesis? - Answers -✔✔
It is unlikely to be true
Central limit theorem say that the mean of the sample mean distribution is - Answers -
✔✔
Which of the following is not one of the assumptions in paired sample t-test? - Answers
-✔✔ The population of the sample is normally distributed
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