enter re 1. A polling agency is investigating the voter support for a ballot measure in...

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enter re 1. A polling agency is investigating the voter support for a ballot measure in an upcoming city election. The agency will select a random sample of 400 voters from one region, Region A, of the city. Assume that the population proportion of voters who would support the ballot measure in Region A is 0.52. be 2.16 the ballot measure is less than 0.50? (a) What is the probability that the proportion of voters in the sample of Region A who support .21167 NIN on AP = ( exam, make sure to Show work The polling agency will take another sample from a different region, Region B, of the city. The agency plans to select a random sample of 500 voters. Assume that the population proportion of voters who would support the ballot measure in Region B is 0.54. (b) Describe the sampling distribution of the difference in sample proportions (Region B minus Region A). (needed: shape, mean, and standard deviation) .S Mp=.52 A (c) What is the probability that the PA - P >.03 200 Couldn't figure out } % 2. The distribution of pH levels for all community swimming pools in a large county is approximately normal with mean 7.4 and standard deviation 0.4. According to swimming pool studies, the safest pH levels for water in swimming pools are between 7.2 and 7.8. (a) One community swimming pool in the county will be selected at random. What is the probability that the selected pool has a pH level that is not considered safe? = P (Not Safe) = .1336 The county health inspector will select a random sample of 5 community swimming pools in the county to investigate the pH levels. (b) Describe the sampling distribution of the sample mean for samples of size 5. (needed: shape, mean, and standard deviation) Eu couldn't figure out Gull (nollsive (c) The inspector finds that the 5 pools they inspected are outside the safe pH levels. What is the probability of that occurring? 0026 two swt tall) wpr 255 enter re 1. A polling agency is investigating the voter support for a ballot measure in an upcoming city election. The agency will select a random sample of 400 voters from one region, Region A, of the city. Assume that the population proportion of voters who would support the ballot measure in Region A is 0.52. be 2.16 the ballot measure is less than 0.50? (a) What is the probability that the proportion of voters in the sample of Region A who support .21167 NIN on AP = ( exam, make sure to Show work The polling agency will take another sample from a different region, Region B, of the city. The agency plans to select a random sample of 500 voters. Assume that the population proportion of voters who would support the ballot measure in Region B is 0.54. (b) Describe the sampling distribution of the difference in sample proportions (Region B minus Region A). (needed: shape, mean, and standard deviation) .S Mp=.52 A (c) What is the probability that the PA - P >.03 200 Couldn't figure out } % 2. The distribution of pH levels for all community swimming pools in a large county is approximately normal with mean 7.4 and standard deviation 0.4. According to swimming pool studies, the safest pH levels for water in swimming pools are between 7.2 and 7.8. (a) One community swimming pool in the county will be selected at random. What is the probability that the selected pool has a pH level that is not considered safe? = P (Not Safe) = .1336 The county health inspector will select a random sample of 5 community swimming pools in the county to investigate the pH levels. (b) Describe the sampling distribution of the sample mean for samples of size 5. (needed: shape, mean, and standard deviation) Eu couldn't figure out Gull (nollsive (c) The inspector finds that the 5 pools they inspected are outside the safe pH levels. What is the probability of that occurring? 0026 two swt tall) wpr 255