A sample of 36 students are drawn from the NUST student population, and their body weights are measured. Their results show a mean weight of 84 kg with a standard deviation of 14.8 kg. When constructing a confidence interval estimate for the single unknown population mean weight for the NUST student population, What will be the lower limit (LL) for this confidence interval estimate
- A sample of 36 students are drawn from the NUST student population, and their body weights are measured. Their results show a
mean weight of 84 kg with a standard deviation of 14.8 kg.
When constructing a confidence
a.
75.55
b.
80.40
c.
90.45
d.
None of the provided
- Due to the sharp increase in the prices of urban properties over the last five years, only a small percentage of new city dwellers can afford to buy their own property. According to a recent survey, only 22% of these new city dwellers can afford to buy their own property. An estate agency who wanted to verify this, considered a random sample of 200 recent city dwellers, and found that only 38 of them bought their property in town. Test at the 5% significance level whether the percentage has changed.
State the alternative hypothesis
a.
Ha : population proportion in not equal to 0.22
b.
Ha : population proportion in not equal to 0.38
c.
Ha : population proportion in not equal to 0.05
d.
None of the provided
- A sample of 36 students are drawn from the NUST student population, and their body weights are measured. Their results show a mean weight of 84 kg with a standard deviation of 14.8 kg.
If you construct a 90 % degree of confidence interval estimate for the unknown population mean weight. What critical value will be used?
a.
1.645
b.
1.96
c.
2.575
d.
None of the Provided
- Due to the sharp increase in the prices of urban properties over the last five years, only a small percentage of new city dwellers can afford to buy their own property. According to a recent survey, only 22% of these new city dwellers can afford to buy their own property. An estate agency who wanted to verify this, considered a random sample of 200 recent city dwellers, and found that only 38 of them bought their property in town. Test at the 5% significance level whether the percentage has changed.
Compute the sample statistic ?
a.
- 0.125
b.
- 2.225
c.
- 1.024
d.
None of the provided
12.A sample of 36 students are drawn from the NUST student population, and their body weights are measured. Their results show a mean weight of 84 kg with a standard deviation of 14.8 kg.
When constructing a confidence interval estimate for the single unknown population mean weight for the NUST student population, What critical value will be used?
a.
t
b.
z
c.
Chi
d.
Non of the provided
13.A company which supplies ready-mixed concrete receives, on average, 6 orders per day. What is the probability that on any given half-day: No orders will be received
a.
0.09565
b.
0.04979
c.
0.02454
d.
None of the provided
14.A sample of 36 students are drawn from the NUST student population, and their body weights are measured. Their results show a mean weight of 84 kg with a standard deviation of 14.8 kg. When constructing a confidence interval estimate for the single unknown population mean weight for the NUST student population
Compute the Standard Error (SE)
a.
0.46
b.
1.0656
c.
2.8
d.
Non of the provided
15.A company which supplies ready-mixed concrete receives, on average, 6 orders per day. What is the probability that on any given day: No more than two orders will be received
a.
0.06197
b.
0.01242
c.
0.08757
d.
None of the provided
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