3. What is the probability of randomly choosing a doctor whose salary is at least $65,000? Answer choices: 4. What is the probability of randomly choosing a doctor whose salary is between $75,000 and $95,000? Answer choices: 0.023 0.975 0.986. 0.023 0.34 0.68 0.75 0.95 5. What is the probability of randomly choosing a doctor whose salary is greater than or equal to $105,000? Answer choices: 6. What is the probability of randomly choosing a doctor whose salary is between $85,000 and $95,000? Answer choices: 0.025 0.046 0.058 0.977 0.16 0.34 0.475 0.4985

According to a health foundation survey from 2018 and 2016, the average annual premiums for employer-sponsored health insurance for family coverage was $16,834 in 2018 and $15,745 in 2016. Suppose the survey for 2018, was based on 250 employees who had employer-sponsored health insurance and the survey for 2016 was based on 200 employees who had employer-sponsored health insurance. Assume the population standard deviation for 2018 and 2016 were $2160 and $1990; respectively. Find a 97% confidence interval for the mean difference. (Round your answer to 1 decimal place.)Lower limit = Upper limit =

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Consider the data from the Anthropology 105 class.  The mean for women is 64.33 in and the standard deviation is 2.64 in. The average height of men in the US is approximately 5ft 10in. What proportion of women represented here are shorter than the average man?