Question 2 4 pts 1 1 8 Deta In a certain state, 36% of adults drive every day. Suppose a random sample of 625 adults from the state is chosen. Let X denote the number in the sample who drive every day. Find the value of X that is two standar deviations above the mean. 201 249 O 513 225 237 Submit QuestionQuestion 4 4 pts 9 1 0 Details Find the number of US adults that must be included in a poll in order to estimate, with margin of error 1.5%, the percentage that are concerned about high gas prices. Use a 94% confidence level, and assume about 79% are concerned about gas prices. 2607 3928 1387 2259 603 Submit QuestionQuestion 5 4 pts 9 1 0 Detai Weights of packages, in pounds, shipped by a company, have mean 34.4 and standard deviation 7.7. Find the probability that a randomly chosen sample of 36 packages has a mean weight above 32 pounds. 0.0307 0.6217 0.8925 0.3117 0.9693 Submit QuestionQuestion 6 4 pts 9 1 0 Details If 3 people are chosen at random and without replacement from a group of 5 females and 3 males, the number of females chosen, X, has probability distribution P(X) as in the table below. X 0 2 3 P(X) 0.018 0.268 0.536 0. 178 Find the value of the mean plus the standard deviation. 2.37 1.87 2.58 1.94 3.33 Submit QuestionQuestion 3 4 pts 9 1 0 Deta Lifetimes of batteries of a certain type are normally distributed with mean 42.6 hours and standard deviation 2.8 hours. Find the lifetime in hours that would separate the 7.5% of batteries with the shortest lifetimes from the rest. 38.57 45.80 35.80 42.39 40.50 Submit