Determine the variance for the table (in your calculation, use the final result from the revious problem rounded to one decimal place). Round this answer to 2 decimal laces as needed. 0 1 2 3 4 P(x) 0.15 0.20 0.35 0.25 0.05

The value of a certain car when it was brand new with 0 mileage was $17,000 but the value dropped to $4,000 when the car acounulated 80,000 miles shown in the scatter plot below. Car's Mleage and Value S17.000 $2,000 Mileage Based on the data in the scatter plot, at what mileage was the car worth about $12,000? O 20,000 miles O 30,000 miles O 60,000 miles O 80,000 miles

The results of a survey on the belief that stem cell research has merit are shown in the table below. X 1524 F4 DOO 000 N 2104 Here, X denotes the number who believed that stem cell research has merit. Complete parts a and b below. a. Explain how to interpret "Sample p" and "95% CI" in this table. The "Sample p" is the proportion of in the sample who believe stem cell research has merit, 1524/2104 0.72. The "95% CI" is the 95% confidence interval and it means that we can be confident ▼proportion. that the interval to contains the (Round to four decimal places as needed.) 28 Sample p 0.724335 F5. % 5-1 6 tv Clear all F6 95% CI (0.7052, 0.7434) C & A4 F7 Check * 8 Numbers Smilan DII F8 B DD F9 HA F10

The accompanying table lists 18 of the largest companies in the world ranked by their market capitalization (in billions of dollars). A company's market capitalization is defined as the number of its shares multiples by the price per share. Complete parts a throuah d below. a. Determine the coefficient of variation. Data Table coefficient of variation = (Round to two decimal places as needed.) b. Calculate the z-score for a company with a market capitalization of $250 billion. Company Market Cap ($ billions) Z-score = (Round to two decimal places as needed.) Wells Fargo 274.4 Nestle 229.5 c. Test to determine if the empirical rule holds true by determining the percentage of observations that fall within tone standard deviation from the mean. ExxonMobil 343.2 What is the percentage of observations that fall within tone standard deviation from the mean? ATandT 249.3 JPMorgan Chase Alphabet 306.6 % of the observations fall within t one standard deviation from the mean. 579.5 (Round to the…