A researcher wishes to estimate the number of days it takes a car dealer to sell a certain model. A sample of 50 cars had a mean time of 54.0 days on the dealer’s lot with a standard deviation of 6.0 daysConsider the formula used for any confidence interval and the elements included in that formula. What happens to the confidence interval if youincrease the confidence level,increase the sample size, orincrease the margin of error? Only consider one of these changes at a time. Explain your answer with words and by referencing the formula.
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