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Assume a binomial probability ditribution has p=0.60 and n=200 what is the mean and standard deviation ?is this a situation in which binomial probabilities can be approximated by the normal probabi
WidgeCorp is considering branching out into cold beverages. You have been asked to come up with a regression model to forecast monthly sales of cold beverages for the next year. Think about what va
A study conducted at a certain college shows that 60% of the school's graduates find a job in their chosen field within a year after graduation. Find the probability that 11 randomly selected gradu
A psychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 busi
The credit score of a 35 year old applying for a mortgage at Ulysses Mortgage Associates is normally distributed with a mean of 600 and a standard deviation of 100. (a) Find the credit score that d
In a batch of 8,000 clock radios 9% are defective. A sample of 15 clock radios is randomly selected without replacement from the 8,000 and tested. The entire batch will be rejected if at least one
Use a 0.05 significance level to determine whether there is suffcient evidence to support the clain that the new balls have bounce heights with a mean different from 92.84 in. Does it appear that th
What does the following statement mean: The tests results for the class indicated a bimodal distribution with a very large standard deviation for the population. For most teachers such a distributio
If the person from the city is selected at random and it is learned that he/she did not vote, what is the probability that the person is liberal?
Suppose that the probability that the student knows the answer to the question is 0.80 and the probability that the student guesses is 0.20. If student guesses, probability of correct answer is 0.25
If the test value for the difference between the means of two large samples is 2.57 when the critical value is 1.96, what decision should be made?
In a given area, the probability that a person is exposed to an advertisement of Simco Paper Company is 0.30. Suppose that six people are randomly chose from among the population area.
Suppose that you are told that this student has at least three years of work experience. What is the conditional probability that this student has at least for years of work experience.
A coin was flipped 60 times and came up heads 36 times. What is the critical value you would use to test whether the proportion of heads is greater than 0.50 at a 10% level of significance?
The Bingo Hamburger Company has a chain of 12 stores in a large city. Sales figures and profits for the stores are given in the following table. Obtain a regression line for the data and predict pro
Identify the null hypothesis, alternative hypothesis, test statistic, Critical Values, conclusion about the null hypothesis, and final conclusion that addresses the original claim.
From a lot of 10 missiles, 4 are selected at random and fired. If the lot contains 3 defective missiles that will not fire, what is the probability that What is the expected number of missiles that
To determine the mean amount of cereal dispensed by a filling machine, a random sample of 32 boxes will be selected and their contents weighed. The sample mean X will be used to estimate. Determine
Also, when the weather was forecast to be sunny, it turned out to be sunny 80% of the time. When the weather was forecast to be rainy it turned out to be rainy 90% of the time. What is Mary's optima
Females and males alike from the general adult population volunteer an average of 4.2 hours per week. A random sample of 20 female college students and 18 male college students indicated these resul
Assume that the number of calories in a McDonald's Egg McMuffin is a normally distributed random variable with a mean of 290 calories and a standard deviation of 14 calories.
The manager of a restaurant in a commercial building has determined that the proportion of customers who drink tea is 14%. What is the probability that in the next 100 customers at least 10% will b
In a study of marriages, researchers examined the faithfulness of men and the survival of the marriage. The results for 5,000 marriages were as follows: Is there a relationship between faithfulness
Compute descriptive statistics - mean, median, mode, quartiles, range, interquartile range, variance, standard deviation, coefficient of variation for 25,4,5,5,6,12,17,10,10,13,8,15,16,0,9,0
When we compute the standard deviation for a sample we subtract 1 from the denominator to give us the BLUE (Best Linear Unbiased Estimator) Explain Why?