Use the probability distribution to complete parts (a) and (b) below. The number of defects per 1000 machine parts inspected Defects 1 4 5 Probability 0.262 0.299 0.233 0.153 0.037 0.016 (a) Find the mean, variance, and standard deviation of the probability distribution. The m (Roun The vi deviates from the mean by about 1 defect. (Roun does not deviate from the mean. The sl (Roun deviates from the mean by about 2 defects. (b) Int deviates from the mean by more than 2 defects. 1 or 2 defects. The standard deviation is 1.2, so the typical number of defects in a batch of The m IS 1000 (Round to one decimal place as needed.)

Find E(X), Var(X), and the standard deviation of X, where X is the random variable whose probability table is given in the table below. Outcome 1 2 3 1 1 Probability 5 5 What is the expected value of the random variable X associated with the probability table given in the problem statement? E(X) = 12 5 (Type an integer or a simplified fraction.) What is the variance of the random variable X? Var(X) = (Type an integer or a simplified fraction.) 35 ■ . = C (-) Moro

The population of weights of Calculus textbooks is normally distributed with a population mean weight of 2.46 pounds and population standard deviation of 0.53 pounds. If a randomly selected Calculus textbook is weighed, what is the probability that the Calculus textbook will weigh less than 1.5 pounds? P ( x < 1.5 pounds ) Round your final answer to four decimal places.        = ______________

x f(x) 20 0.10 25 0.20 30 0.25 35 0.15 40 0.10 a. What is the probability that the firm will obtain 40 or more new clients? b. What is the probability that the firm will obtain fewer than 35 new clients? c. find  expected vaule= variance= standard deviation =

Blood pressure: High blood pressure has been identified as a risk factor for heart attacks and strokes. The proportion of U.S. adults with high blood pressure is  0.4 . A sample of  37  U.S. adults is chosen. Use the TI-84 Plus Calculator as needed. Round the answer to at least four decimal places. Part: 0 / 6 0 of 6 Parts Complete   Part 1 of 6     Is it appropriate to use the normal approximation to find the probability that more than  45%  of the people in the sample have high blood pressure? It ▼(Choose one) appropriate to use the normal curve, since  =np  ▼(Choose one) 10 and  =n−1p  ▼(Choose one)  10 .

Complete parts (a) and (b) below. The number of dogs per household in a small town Dogs Probability 1 3 4 0.649 0.222 0.088 0.022 0.014 0.006 (a) Find the mean, variance, and standard deviation of the probability distribution. Find the mean of the probability distribution. u= (Round to one decimal place as needed.) Find the variance of the probability distribution. o = ' (Round to one decimal place as needed ) Find the standard deviation of the probability distribution. (Round to one decimal place as needed.) (b) Interpret the results in the context of the real-life situation O A. A household on average has 0.5 dog with a standard deviation of 11 dogs. O B. A household on average has 0.6 dog with a standard deviation of 0.9 dog. C. A household on average has 0.8 dog with a standard deviation of 0.9 dog. O D. A household on average has 0.9 dog with a standard deviation of 0.5 dog.

nment: Applications X X + ses/48615/assignments/15888927module item id-6411020 eol G urse Home Page Personal Computer.. Chamberlain Univer... Free ethical and leg... Use the normal distribution to compute probability with technology Excel Question The weight of bags of green landscaping gravel, X, is modeled by normal distribution with a mean 26.7 kilograms and standard deviation 0.3 kilogram. Determine the probability that a randomly selected bag of green gravel will weigh less than 26 kilograms. Round your answer to four decimal places. Sorry, that's incorrect. Try again? 26.14 9:01 AM ) 10/5/2019 X a

The random variable X is the crew size of a randomly selected shuttle mission. Its probability distribution is shown below. Complete parts a through c. 2 5 6 7 8 D 4 0.045 0.306 P(X=x) 0.025 0.187 0.431 0.006 ... a. Find and interpret the mean of the random variable. μ= 5.947 (Round to three decimal places as needed.) Interpret the mean. Select the correct choice below and fill in the answer box to complete your choice. (Round to three decimal places as needed.) A. The average number of persons in a shuttle crew is 5.947 person(s). OB. The most common number of persons in a shuttle crew is person(s). b. Obtain the standard deviation of the random variable. O (Round to three decimal places as needed.) Check answer Help me solve this View an example Get more help. 30 20 F10 F4 MacBook Air F6 DII FB Clear all DD F9

Questi 4.1.31 Assigned Media ▼ Use the probability distribution to complete parts (a) and (b) below. The number of defects per 1000 machine parts inspected Defects 1 2 3 4 Probability 0.263 0.291 0.239 0.156 0.037 0.014 (a) Find the mean, variance, and standard deviation of the probability distribution. The mean is 1.5 (Round to one decimal place as needed.) The variance is 1.2 (Round to one decimal place as needed.) The standard deviation is 1.2. (Round to one decimal place as needed.) (b) Interpret the results. The mean is |, so the average batch of 1000 machine parts has The standard deviation is , so the typical number of defects in a batch of 1000 (Round to one decimal place as needed.) (1,1) More Enter your answer in the edit fields and then click Check Answer. All parts showing Clear All Check Answer 10:06 PM P Type here to search A O e . D du 2/9/2021 PriScn Hoove End VgUp 6 8.

Suppose Y is normally distributed with mean = -3 and variance equal to 4. Find the probability that Y is less than or equal to -0.3. Hint, you must standardize the random variable. 0.9115 0.4602 0.5832 0.1