Given that sample proportion of respondents that run red lights is p_hat 0.194 and the margin of error for the 95% confidence interval is 0.027, fınd the confidence interval. Round to 3 decimal places.
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The confidence interval formula is:
CI = Point estimate Margin of error
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- A random sample of 202 shoppers at bluewater were asked why they chose to stop at location. 93 indicated it was the variety if shops was key reason. Estimate a 90% confidence interval for the true proportion of shoppers who wen their for variety as a key reason and interpret the meaning of this interval. Use 3.dpYou measure 22 dogs' weights, and find they have a mean weight of 57 ounces. Assume the population standard deviation is 4.7 ounces. Based on this, construct a 99% confidence interval for the true population mean dog weight.Give your answers as decimals, to two placesYou measure 35 backpacks' weights, and find they have a mean weight of 64 ounces. Assume the population standard deviation is 4 ounces. Based on this, construct a 99% confidence interval for the true population mean backpack weight. Give your answers as decimals, to two places + ounces
- You measure 40 turtles' weights, and find they have a mean weight of 63 ounces. Assume the population standard deviation is 7.5 ounces. Based on this, construct a 90% confidence interval for the true population mean turtle weight. Give your answers as decimals, to two places ouncesYou measure 45 backpacks' weights, and find they have a mean weight of 37 ounces. Assume the population standard deviation is 3.5 ounces. Based on this, construct a 95% confidence interval for the true population mean backpack weight. Give your answers as decimals, to two places ± ouncesDo Construct a confidence interval on a slope?
- Alfredo wants a 85% confidence interval for the true average gas mileage for a Gremlin after randomly sampling 9 Gremlins. It is known that the true sigma for Gremlin gas mileage is 4 mpg, and the average of the 9 Gremlins in Alfredo's study was 24 mpg. Find the confidence interval assuming the distribution is normal.You measure 34 watermelons' weights, and find they have a mean weight of 59 ounces. Assume the population standard deviation is 13 ounces. Based on this, construct a 90% confidence interval for the true population mean watermelon weight. Give your answers as decimals, to two places ouncesYou measure 25 turtles' weights, and find they have a mean weight of 46 ounces. Assume the population standard deviation is 3.2 ounces. Based on this, construct a 99% confidence interval for the true population mean turtle weight.Give your answers as decimals, to two places
- A researcher investigated whether the temperature of milk, x, can be used to predict the milk's pH content, y. She predicted the pH level of a glass of milk with a temperature of 8.45 degrees to be ŷ= 6.795 a)A 95% confidence interval for the mean pH of all milk with temperature 8.45 degrees is calculated to be (6.76, 6.83). Which of the following is the correct interpretation of this confidence interval? -The mean pH level for all glasses of milk having a temperature of 8.45 degrees is somewhere between 6.76 and 6.83, with 95% confidence. -The pH level for one glass of milk with a temperature of 8.45 degrees is somewhere between 6.76 and 6.83, with 95% confidence. -There is a probability of 0.95 that the mean pH level for this glass of milk with temperature 8.45 degrees is between 6.76 and 6.83. -95% of all glasses of milk with a temperature of 8.45 degrees have a pH level between 6.76 and 6.83. b)Suppose we have a glass of milk whose temperature is 8.45 degrees. We…A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. The mean is found to be 7.8 reproductions and the population standard deviation is known to be 2.2 If a sample of 697 was used for the study, construct the 85% confidence interval for the true mean number of reproductions per hour for the bacteria. Round your answers to one decimal placeYou measure 33 backpacks' weights, and find they have a mean weight of 38 ounces. Assume the population standard deviation is 14.1 ounces. Based on this, construct a 99% confidence interval for the true population mean backpack weight. Give your answers as decimals, to two places ± ounces