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A small private school Basketball team makes 45 shots out of 70 attempts per game. They played large chartered school team and they make about 35 out of 60 attempts per game. If each teams plays the
Determine percent of the women watch TV less than 35 hours per week? (Round z-score computation to 2 decimal places and your final answer to 4 decimal places.)
For the most current year available, the mean annual cost to attend private university in United States was $20,207. Suppose the distribution of annual costs follows the normal probability distribut
Among U.S. cities with a population of more than 250,000 the mean one-way commute to work is 24.3 minutes. The longest one-way travel time is New York City, where the mean time is 38.3 minutes. Assu
The number of viewers of American Idol has a mean of 20 million with a standard deviation of 4 million. Assume this distribution follows a normal distribution.
The closing price of Schnur Sporting Goods Inc. common stock is uniformly distributed between $23 and 43 for each share. Determine the probability that the stock price will be:
An article in Parenting magazine reported that 60% of Americans needed a vacation after visiting their families for the holidays. Suppose this is the true proportion of Americans who feel this way.
Twenty percent of American households own three or more cars. A random of 144 American households is chosen. Let X be the number of households chosen that own three or more cars.
Draw graphs to compare the variability of the sampling distribution of the mean with that of the population (by hand or by computer). Discuss.
Twenty percent of American households own three or more cars. A random of 144 American households is chosen. Let X be the number of households selected that own three or more cars.
Opinion polls find out that 20% of Americans adults claim that they don't get enough sleep. Assume you take the random sample of 200 American adults and count the number X in your sample that claim
A set of 20 cards includes 12 red cards and 8 black cards. The cards are shuffled thoroughly and you select one at random, observe its color, and replace it in the set. The cards are thoroughly resh
In order to test validity of multiple regression model involving five independent variables and 30 observations, the numerator and denominator degrees of freedom for the critical value of F are, res
Fifteen people were asked to indicate their preference for domestic versus imported cars. The following data showed their preferences.
The shelf life of photographic film is of interest of the manufacturer. The manufacturer observes the following shelf life for eight units chosen at random from the current production. Assume that t
Suggest the experiment of tossing a coin ten times, and let X be the number of heads that occur in such a set of tosses. Use excel to simulate 2,000 observations of X and then use these to estimate
An automobile insurer has found which repair claims have mean of $1520 and standard deviation of $770. Assume that the next 100 claims can be regarded as random sample from the long-run claims proce
The total SAT scores of high school seniors in recent years have mean ? = 1026 and standard deviation ? = 209. The distribution of SAT scores is roughly Normal.
How does caffeine affect our bodies? In a matched pairs experiment, subjects pushed a button as quickly as they could after taking a caffeine pill and also after taking a placebo pill. The mean push
Use consecutive odds ratios to find the largest k that maximizes the Poisson (u) probability Pu(k). For what values of u is there a double maximum? What are the two values of k in that case? Is ther
A major oil company is studying relationship between the daily traffic count and the number of gallons of gasoline pumped at company stations. A sample of eight company owned stations is selected an
A survey of 25,400 population showed that 870 of 1100 people sampled were in favor of the new ice rink. Using the 95% level of confidence, what is the confidence interval for for the proportion who
The time is uniformly distributed in a range of 20 minutes to 40 minutes:
Let X be the number of successes in 25 independent trials with probability 1/10 of success on each trial. Let m be the most likely values of S.
Which of the following Excel formulas would be employed to simulate a toss of a coin that is loaded in such a way that P(T)= 0.3?