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What is the probablility that this customer will not have to wait behind anyone?
At a 5% significance level, test to determine if at least 22% of the population will like the new soft drink. Determine the p-value.
63% of men consider themselves pro baseball fans randomly select 10 men and ask each if he considers himself a pro baseball fan. find the probability that the number who consider themselves baseball
A reading X taken from a chemical process is know to be a normal random Variable with a mean of 4.0 gm and with 8% of the readings exceeding 4.2 gm. Assume it is possible to adjust the scales in a
Suppose you earned 100 points on an exam. Under which of the following conditions did you earn the best grade? justify your response with one to two sentences.
In a battleground state, 40% of all voters are Republicans. Assuming that there are only two parties - Democrat and Republican, if two voters are randomly selected for a telephone survey, what is th
Suppose that the probability distribution of a random variable x can be described by the formula P(x) = x/15. Calculate the variance and standard deviation.
Calculate the probability that an adult male weighs less than 130 pounds.
If we know the probability of success is 0.8, determine the maximum likelihood estimate for the number of trials in each experiment, n.
What is the value of this statement in terms of the research process? What is the relevance and relationship of this statement to today's technology-advanced business world? Where do these "new ques
Based on your answers from (a) and (b), what statistical decision should you make?
Can he conclude, at the .10 level of significance, that the average trunk diameter of a pine tree is greater than the average diameter of a spruce tree?
The employees of a company were surveyed on questions regarding their educational background and marital status. Of the 600 employees, 400 had college degrees, 100 were single, and 60 were single co
How many questions must the test contain in order to reduce the standard deviation of Jodi's proportion of correct answers to half its value for a 100-item test?
With a mean of 33 oz. and a standard deviation of 0.7 oz. 95% of packets actually contain more than x oz. of soap powder. What is x?
Decide whether the experiment is a binomial, Poisson, or neither based on the information given. You observe the gender of the next 950 babies born at a local hospital. The random variable represent
A farm brings 15 tons of watermelon to market. Find a 90% confidence interval for the population mean cash value of this crop. What is the margin of error?
Find the probability that at least 27 of them already carry secondary deviation of the distribution of sample proportions with which of you are working.
Suppose that the standard deviation of the annual household incomes for a city is $20,000. Also we know that 20% of household incomes of the city are below $25,000. Find the mean of the annual house
Of the remaining 9, 4 can play only forward or midfielder; the other 5 can play only defender or midfielder. How many possible lineups are there?
Eight rooks are placed in distinct squares of an 8×8 chessboard, with all possible placements being equally likely. Find the probability that all the rooks are safe from one another, i.e., th
Find the conditional probability that a randomly chosen person from this population will contract both diseases, given that he or she has contracted at least one disease.
Find the z score for a raw score of 550 given the following information: 554 sample mean, 30 sample standard deviation. a) draw the distribution and note the raw scores at the points of the first devi
Can the college conclude that the students in the new program are significantly different from the rest of the freshman class? Use a two-tailed test with .05
a drama fan has taped 9 episodes (on nine different videotapes)of a drama. however, he only has time to watch four episodes. suppose he selects four tapes at random.