The number of electrical outages in a city varies from day to day. Assume that the number of electrical outages (x) in the city has the following probability distribution. The mean for the number of electrical outages is ________. Please show your solution.

The time it takes a mechanic to change the oil in a car is exponentially distributed with a mean of 5 minutes.

Please let me know the answer

Suppose that a company gains an average of 5 customers per $500 spent on advertising. If the company spends $700 on advertising, find the probability of gaining at least 13 customers. Part 1 out of 2Find the mean number  λ. Round to the nearest tenth.  λ= _________

L10Q7.Find the unknown value from the following probability distribution.

O The life of light bulbs is distributed normally. The variance of the lifetime is 100 and the mean lifetime of a bulb is 520 hours. Find the probability of a bulb lasting for at most 538 hours. Round your answer to four decimal places. Answer If you would like to look up the value in a table, select the table you want to view, then either click the cell at the intersection of the row and column or use the arrow keys to find the appropriate cell in the table and select it using the Space key. ny angle. 6 1 1 hp 9 a Z 2 W S X # 3 e d C A 64 $ 4 r f V % 5 t g 6 b Normal Table - to-z Normal Table -00 to z Oll y h & 7 n O u J * 8 m O i N k ( 9 < O alt 1 • JL 0 р : ctrl { [ ? / Tables O SBA + 11 Keypad Keyboard Shortcuts Submit Answer 1 USE YOUR SMARTPHONE FOR Oct 6 } ] 2:01 - 8 8 backspace 1 enter shift (in

The director of research and development is testing a new drug. She wants to know if there is evidence at the 0.02 level that the drug stays in the system for more than 312 minutes. For a sample of 69 patients, the mean time the drug stayed in the system was 319 minutes. Assume the variance is known to be 400. Enter the decision rule. Reject Ho if z >_______

It is thought that basketball teams that make too many fouls in a game tend to lose the game even if they otherwise play well. Let x be the number of fouls more than (i.e., over and above) the opposing team. Let y be the percentage of times the team with the larger number of fouls wins the game.

Sarah throws a fair die multiple times, recording the total number of "2"s she throws and then calculating the proportion of "2"s she has thrown so far after each throw. She then constructs a graph to visualize her results. Which of the following statements is FALSE? a. This is an example of the law of large numbers. b. The theoretical probability of getting a 2 is 0.167 for each throw. c. The relative frequency of "2"s thrown changes as Sarah throws the die more. d. The probability distribution for the possible number of outcomes changes as the total number of throws increases.

Suppose that a company gains an average of 7 customers per $700 spent on advertising. If the company spends $700 on advertising, find the probability of gaining at least 13 customers. Part 1 out of 2Find the mean number λ. Round to the nearest tenth.  λ = _______