Take your time . Please make sure you round your answers correctly slight mistake i lose i will lose my marks .

This is a question of business Statistics . Take your time and provide correct answer pls .

There are 8 questions

Please answer the below questions correctly . Tutors provided with wrong answers and i have only one attempt left . Please read the question very carefully .

Please provide accurate answers please check the decimal places .

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Question 1 1 points Save Answer Assume that the population of a store customers is innite For this population, the proportion of of those customers who bu).r the serwce plan is 0.15. For the sample size of 207', nd the standard deviation of the sampling drstribution of the samp'e proportion {standard error). Round your answer to four decimal places. Question 2 2 points Save Answer To test the reliability of electric devices. a sample of 35 devices was taken. The mean number of minutes that the devices in the samplie performed without errors was 209. The sample standard oewation was 10.9. What was the left boundary of 93% condence interval to estimate the population mean? Use Excel for all computations and round your final answer to 2 decimals. Question 3 1 points Save Answer It is known that for a = 0.1. 20,2 =1.645. Using this fact. solve the following problem. A sample of 47 comanies was taken to nd out how many companies went bankrupt over the period of 1 0 years. The proportion ofthe companies which led bankruptsy appeared to be 0.26 in the sample. What is the le'l't boundary of90% condence interval to estimate the proportion of bankmpt companies cwerthe period of 10 years? Assume that the conditions for the samling distribution to be approximately normal are satised. Round your answer to 4 decimals. QEstion II Find the nite population correction factor for the sample size of 36 and the population Size of 251. Round your answer to two decimals. \fQuestion 6 1 points Save Answer Its known that the mean age of the popuiaiton ofdoctors in some community is 59 years. What is the expected value of the sampling distribution of the sample mean? Round your answer to the whole number of years. Question 7 1 points Save Answer If the sample stadard deviaiton is equal to 10.42 and the sample size is 60. what '5 the margin oferrur for the corresponding 95% condence interval to estimate the population mean? Use Excel and round your answer to 2 decimals. Question 3 2 points Save Answer If the proportion of Mastercard transactions in a sample of various credit card transactions is equal to 0.656 and the sample size is 116. what is the margin of error for the corresponding 94% condence interval to estimate the proportion iof Mastercard transations in the population? Assume that the conditions for the sampling distribution to be approximately normal are satised. Use Excel to calculate and round your answer to d decimals