on D Question 1 3 pts Suppose a battery manufacturer claims that their batteries will give a mean of 40 hours of use. Th

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On D Question 1 3 Pts Suppose A Battery Manufacturer Claims That Their Batteries Will Give A Mean Of 40 Hours Of Use Th 1 (44.7 KiB) Viewed 30 times

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on D Question 1 3 pts Suppose a battery manufacturer claims that their batteries will give a mean of 40 hours of use. The quality control department is concerned that the value is less than 40 hours. They take a random sample of 10 batteries and measure the number of hours of use for each battery. The mean lifetime for the sample of 10 batteries is 39.4 hours with a standard deviation of 3 hours. Assume that the battery life of this manufacturer's batteries is normally distributed. Verify the conditions are met. Provide explanations and any necessary calculations.
Question 2 Suppose a battery manufacturer claims that their batteries will give a mean of 40 hours of use. The quality control department is concerned that the value is less than 40 hours. They take a random sample of 10 batteries and measure the number of hours of use for each battery. The mean lifetime for the sample of 10 batteries is 39.4 hours with a standard deviation of 3 hours. Assume that the battery life of this manufacturer's batteries is normally distributed. represents the ✓ [Select] batteries made b standard deviation of the sample proportion of the mean 2 pts lifetime of Select] ill
D Question 2 Suppose a battery manufacturer claims that their batteries will give a mean of 40 hours of use. The quality control department is concerned that the value is less than 40 hours. They take a random sample of 10 batteries and measure the number of hours of use for each battery. The mean lifetime for the sample of 10 batteries is 39.4 hours with a standard deviation of 3 hours. Assume that the battery life of this manufacturer's batteries is normally distributed. represents the [Select] batteries made by this manufacturer. lifetime of [Select] all the 2 pts some the sample of 10 quality
Suppose a battery manufacturer claims that their batteries will give a mean of 40 hours of use. The quality control department is concerned that the value is less than 40 hours. They take a random sample of 10 batteries and measure the number of hours of use for each battery. The mean lifetime for the sample of 10 batteries is 39.4 hours with a standard deviation of 3 hours. Assume that the battery life of this manufacturer's batteries is normally distributed. Calculate a 95% confidence interval for the mean lifetime of the batteries made by this manufacturer. The critical value used to calculate this interval is answer to three decimal places. 8 pts The standard error used to calculate this interval is I answer to three decimal places. Round your Round your The mean lifetime of the batteries made by this manufacturer is between and hours. Round your answers to one decimal
Question 4 Suppose a battery manufacturer claims that their batteries will give a mean of 40 hours of use. The quality control department is concerned that the value is less than 40 hours. They take a random sample of 10 batteries and measure the number of hours of use for each battery. The mean lifetime for the sample of 10 batteries is 39.4 hours with a standard deviation of 3 hours. Assume that the battery life of this manufacturer's batteries is normally distributed. Based on your interval, are the quality control department's concerns valid? Explain. Edit View Insert Format Tools Table 12pt ✓ Paragraph 2 pts BIUA 2 T² :