In a sample of 4972 car owners, 2326 said that they would seriously consider purchasing an electric-powered vehicle. What is the point estimate for the proportion of all car owners who.would seriously consider purchasing an electric-powered vehicle? What parameter is being estimated in this scenario? Oo Op other
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- From a random sample of 1000 Americans, it was discovered that 920 of them lived in neighborhoods with acceptable levels of Carbon Monoxide. (Source: The Environmental Protection Agency) Obtain a point estimate for the proportion of Americas who live in neighborhoods with acceptable levels of carbon monoxide.While it is known from data on national sales that 25% of cars sold are sedans, a survey in one city indicated that 21% of individuals owned one. Identify which of the numbers is a parameter and which is a statistic.In the February 20th issue of the East Daily Times, it was reported that n = 418 insured patientswere surveyed on their opinions about insurance rates. Of the 418 surveyed, Y = 280 blamedrising insurance rates on large court settlements against doctors. With 95% confidence, estimate the parameter p, that is, the proportion of all insured patients who blame rising insurance rateson large court settlements against doctors.
- A survey of 501 randomly chosen US adults found that 40% of the 225 men and 50% of the 276 women made an online purchase during the past month. Do these data provide statistical evidence at the α = 0.05 level that women are more likely than men to make online purchases? Be sure to state the parameter, check conditions, perform calculations, and make conclusion(s).An article compared the dielectric constants between two types of asphalt, HL3 and HL8, commonly used in pavements. For 42 specimens of HL3 asphalt the average dielectric constant was 5.92 with a standard deviation of 0.15, and for 37 specimens of HL8 asphalt the average dielectric constant was 6.05 with a standard deviation of 0.16. Can you conclude that the mean dielectric constant differs between the two types of asphalt? Find the P-value and state a conclusion. The P-value is . Round the answer to four decimal places. We (Click to select) cannot can conclude that the mean dielectric constant differs between the two types of asphalt.