a) Find the p.m.f of X b) What value of X is most likely?

a) Find the p.m.f of X b) What value of X is most likely?

1) The probability of an automatic window button working on a five year old ford car is 0.984. A student owns a five year old ford car with four automatic window buttons. What is the probability that...

A manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 442 gram setting. It is believed that the machine is underfilling the bags. A 34 bag sample...

A market research firm supplies manufacturers with estimates of the retail sales of their products from samples of retail stores. Marketing managers are prone to look at the estimate and ignore sampling...

Independent random samples, each containing 70 observations, were selected from two populations. The samples from populations 1 and 2 produced 59 and 49 successes, respectively. Test H0:(p1−p2)=0...

A company sells sunscreen in 350 milliliter (ml) tubes. In fact, the amount of lotion in a tube varies according to a normal distribution with mean μ=347 ml and standard deviation σ=4 ml. Suppose...

A random sample of 1100 voters in a particular city found 539 voters who voted yes on proposition 200. Find a 95% confidence interval for the true percent of voters in this city who voted yes...

Cora wants to determine a 99 percent confidence interval for the true proportion of high school students in the area who attend their home basketball games. How large of a sample must she have to...

Shelia's doctor is concerned that she may suffer from gestational diabetes (high blood glucose levels during pregnancy). There is variation both in the actual glucose level and in the blood test that...

Sue thinks that there is a difference in quality of life between rural and urban living. She collects information from obituaries in newspapers from urban and rural towns in Idaho to see if there...

In a study of red/green color blindness, 1000 men and 2850 women are randomly selected and tested. Among the men, 90 have red/green color blindness. Among the women, 8 have red/green color blindness...

statistics

Assume that the salaries of elementary teachers in the United States are approximately normally distributed with a mean of $32,000 and a standard deviation of $6,000. What is the approximate percentage...

Four cards are drawn from a standard deck. No cards are returned. a) Which is more likely: Event A: drawing a straight (four consecutive cards e.g. 5, 6, 7, 8), or Event B: drawing four...

Here are two charts with time as X and price as Y. Each chart represents a day (9:30 to 4pm). And I am using the 5 minutes candlesticks (explanation is attached). So we should have 78 candlesticks...

(a) Find the probability that a single claim, chosen at random, will be less than $690. Answer: 0.4879 (b) Now suppose that the next 90 claims can be regarded as a random sample...

A government official is in charge of allocating social programs throughout the city of Vancouver. He will decide where these social outreach programs should be located based on the percentage of...

(a) Find a 95% confidence interval for p. Answer: 0.541<= p <= 0.621 (b) Find the margin of error for this 95% confidence interval for p. Answer: ?

A clinical trial tests a method designed to increase the probability of conceiving a girl. In the study 480 babies were born, 264 of them were girls. Use the sample data to construct a 99% confidence...

Find the area of the shaded region. The graph depicts the standard normal deviation with mean 0 and standard deviation 1. Z=0.61 The area of the shaded region is___