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Could you please solved both of these, i dont know why they are wong and this is my last question i can ask. please do both thanks

4. + 0/5 points Previous Answers PODStats 9.E.062. RMy Notes A manufacturer of small appliances purchases plastic handles for coffeepots from an outside vendor. If a handle is cracked, it is considered defective and must be discarded. A large shipment of plastic handles is received. The proportion of defective handles p is of interest. How many handles from the shipment should be inspected to estimate p to within 0.05 with 95% confidence? (Enter your answer as a whole number.) 384 handles You may need to use the appropriate table in Appendix A to answer this question. Need Help? Read It Talk to a Tutor Viewing Saved Work Revert to Last Response 5. + 0/5 points Previous Answers PODStats 9.E.064. My Notes A manufacturer of college textbooks is interested in estimating the strength of the bindings produced by a particular binding machine. Strength can be measured by recording the force required to pull the pages from the binding. If this force is measured in pounds, how many books should be tested to estimate with 99% confidence to within 0.1 lb, the average force required to break the binding? Assume that o is known to be 0.5 lb. (Use the value of z rounded to two decimal places.) 1.66 You may need to use the appropriate table in Appendix A to answer this question. Need Help? Read It Talk to a Tutor

Answer 1

The following information is provided,
Significance Level, α = 0.05, Margin of Error, E = 0.05

The provided estimate of proportion p is, p = 0.5
The critical value for significance level, α = 0.05 is 1.96.

The following formula is used to compute the minimum sample size required to estimate the population proportion p within the required margin of error:
n >= p*(1-p)*(zc/E)^2
n = 0.5*(1 - 0.5)*(1.96/0.05)^2
n = 384.16

Therefore, the sample size needed to satisfy the condition n >= 384.16 and it must be an integer number, we conclude that the minimum required sample size is n = 385
Ans : Sample size, n = 385

#2.
The following information is provided,
Significance Level, α = 0.01, Margin or Error, E = 0.1, σ = 0.5

The critical value for significance level, α = 0.01 is 2.58.

The following formula is used to compute the minimum sample size required to estimate the population mean μ within the required margin of error:
n >= (zc *σ/E)^2
n = (2.58 * 0.5/0.1)^2
n = 166.41

Therefore, the sample size needed to satisfy the condition n >= 166.41 and it must be an integer number, we conclude that the minimum required sample size is n = 167
Ans : Sample size, n = 167