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(1 point) Assume the speed of vehicles along a stretch of I-10 has an approximately normal...
Question 4 (25 pts) The speed of vehicles along a stretch of road is described by...
Question 4 (25 pts) The speed of vehicles along a stretch of road is described by a random variable V which has a normal distribution with mean of 75 kph (kilometer per hour) and standard deviation of 10 kph. a. A vehicle is selected randomly, what is the probability that is speed is between 70 kph to 80kph. (5pt) b. The current speed limit is 80 kph. What is the probability that the speed of a randomly selected vehicle is...
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of...
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 64 miles per hour, with a standard deviation of 5 miles per hour. Estimate the percent of vehicles whose speeds are between 59 miles per hour and 69 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately % of vehicles travel between 59 miles per hour and 69 miles per hour.
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of...
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 65miles per hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 56 miles per hour and 74 miles per hour. (Assume the data set has a bell-shaped distribution.)
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of...
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 7171 miles per hour, with a standard deviation of 33 miles per hour. Estimate the percent of vehicles whose speeds are between 6868 miles per hour and 7474 miles per hour. (Assume the data set has a bell-shaped distribution.)
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of...
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 67 miles per hour, with a standard deviation of 3 miles per hour. Estimate the percent of vehicles whose speeds are between 61 miles per hour and 73 miles per hour. (Assume the data set has a bell-shaped distribution.)
(1 point) A)Suppose the scores of students on an exam are Normally distributed with a mean...
(1 point) A)Suppose the scores of students on an exam are Normally distributed with a mean of 303 and a standard deviation of 89. Then approximately 99.7% of the exam scores lie between the numbers _____and_____ such that the mean is halfway between these two integers. (You are not to use R for this question.) B) A telemarketer calls people and tries to sell them a subscription to a daily newspaper. On 16% of her calls, there is no answer...
Suppose the speeds of cars along a stretch of I-40 is normally distributed with a mean...
Suppose the speeds of cars along a stretch of I-40 is normally distributed with a mean of 70 mph and standard deviation of 8 mph. What would be the speed for a car whose z-score is z=−1.6? f a car is chosen at random on this stretch of highway, what is the probability it will be travelling at a speed below 70 mph? If a car is chosen at random on this stretch of highway, what is the probability it...
A normal distribution has mean 50 and standard deviation 4. Approximately what proportion of this normal...
A normal distribution has mean 50 and standard deviation 4. Approximately what proportion of this normal distribution lies above 58?
3. The distribution of passenger vehicle speeds on the Interstate 5 Freeway is nearly normal with a mean of 72.6 mi/hr and a standard deviation of 4.78 mi/hr. (Use the Normal Table). Round all percen...
3. The distribution of passenger vehicle speeds on the Interstate 5 Freeway is nearly normal with a mean of 72.6 mi/hr and a standard deviation of 4.78 mi/hr. (Use the Normal Table). Round all percents to the nearest tenth. What percent of passenger vehicles travel slower than 80 miles per hour? a. b. What percent of passenger vehicles travel between 60 and 80 miles per hour? How fast do the fastest 5% of passenger vehicles travel? C. d. The speed...
How do you do question 23? u, lilas meanl.s ounces and standard deviation 0.125 ounce, what...
How do you do question 23?
u, lilas meanl.s ounces and standard deviation 0.125 ounce, what proportion of the pucks will be usable in professional games? 20. Hockey pucks used in professional hockey games must weigh between 5.5 and 6 ounces. f the weight of pucks manufactured by a particular process is bell-shaped and has mean 5.75 ounces, how large can the standard deviation be if 99.7% of the pucks are to be usable in professional games? 22. Suppose that,...
Question 4 (25 pts) The speed of vehicles along a stretch of road is described by a random variable V which has a normal distribution with mean of 75 kph (kilometer per hour) and standard deviation of 10 kph. a. A vehicle is selected randomly, what is the probability that is speed is between 70 kph to 80kph. (5pt) b. The current speed limit is 80 kph. What is the probability that the speed of a randomly selected vehicle is...
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 64 miles per hour, with a standard deviation of 5 miles per hour. Estimate the percent of vehicles whose speeds are between 59 miles per hour and 69 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately % of vehicles travel between 59 miles per hour and 69 miles per hour.
3. The distribution of passenger vehicle speeds on the Interstate 5 Freeway is nearly normal with a mean of 72.6 mi/hr and a standard deviation of 4.78 mi/hr. (Use the Normal Table). Round all percents to the nearest tenth. What percent of passenger vehicles travel slower than 80 miles per hour? a. b. What percent of passenger vehicles travel between 60 and 80 miles per hour? How fast do the fastest 5% of passenger vehicles travel? C. d. The speed...
How do you do question 23?
u, lilas meanl.s ounces and standard deviation 0.125 ounce, what proportion of the pucks will be usable in professional games? 20. Hockey pucks used in professional hockey games must weigh between 5.5 and 6 ounces. f the weight of pucks manufactured by a particular process is bell-shaped and has mean 5.75 ounces, how large can the standard deviation be if 99.7% of the pucks are to be usable in professional games? 22. Suppose that,...
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