A researcher wishes to estimate, with 95% confidence , the population proportion of adults who think the president of their country can control the price of gasoline. Her estimate must be accurate within 4% of the true proportion. A) what is the minimum sample size needed assuming that no prior information is available (round to nearest whole number). B) what is the minimum sample size needed using a prior study that found that 32% of the respondents said they think their president can control the price of gasoline. C) how do the results compare?
In a survey of 3304 adults, 1430 say they have started paying bills online in the last year. 99% confidence interval for the population proportion is (______,_______) round to three decimal places as needed.
A doctor wants to estimate the HDL cholesterol of all 20 -29 year old females. How many subjects are needed to estimate the HDL cholesterol within 4 points with 99% confidence assuming std dev= 10.5? So I am needing both a 99% confidence level and a 95% confidence level. And tell how does the decrease in confidence affect the sample size required.
Construct the confidence interval for the population mean. C = 0.98, x bar = 15.6, STD dev. = 6.0, and n = 85. A 98% confidence interval for u is (____,_____) round to one decimal place as needed
The population mean annual salary for environmental compliance specialists is about $63,500. A random sample of 40 specialists is drawn from this population. What is the probability that the mean salary of the sample is less than $61,500? Assume the standard deviation = $5600. First find the probability that the mean salary of the sample is less than $61,500 (rounding to four decimal places as needed). Then interpret the results. Either a) about 11.9% of samples of 40 specialists will have a mean salary less than $61,500. This is not an unusual event. B) only 1.19% of samples of 40 specialists will have a mean salary less than $61,500. This is an unusual event. C) about 1.19% of samples of 40 specialists will have a mean salary less than $61,500. This is not an unusual event. Or d) only 11.9% of samples of 40 specialists will have a mean salary less than $61,500. This is an unusual event. Please send results asap
TCO 11) For supply item HM, Bertha Company has been ordering 130 units based on the recommendation of the salesperson who calls on the company monthly. The company has hired a new purchasing agent, who wants to start using the economic-order-quantity method and its supporting decision elements. She has gathered the following information:
According to Erikson, the developmental task of adolescence is to
You are asked to take lateral and A/P radiographs of the right elbow of the dog. The dog is well-behaved and no tranquilizers or anesthesia will be used. In your own words, from when the patient is brought into radiology until the radiographs are taken, please explain the following, making sure touse proper anatomical terminology for positioning: 1) Descripe the PPE you will use when preparing to take this radiograph. 2) How many views are you taking? 3) Where you would take the measurement for this radiograph? a. What metric unit is used when reading caliper? b. Name the three bones that will be positioned under the central beam. Use directional terminology to descripe the aspect of each bone under the beam. c. How many measurements would you take? 4) Describe how to measure the thickness of the anatomical area that the X-ray beam is to penetrate. 5) What information would you put in the radiology log before the radiograph is taken? 6) When should you return the patient to his/her cage or kennel?
Find the GCD and LCM of the following pair of natural numbers.45,1,875