Question 1181461: 1.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.
2.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
3.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?
4.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?
5.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
6.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.
7.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)
Answer by greenestamps(13203)   (Show Source):
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