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Construct an approxinate 95% confidence interval for the true proportion p by taking +2SEs from the sample proportion.
If a family in the community is randomly chosen, what is the probability that they own their own car or their own home but not both.
If you are planning to purchase a cell phone, are any of the measures of center the most important statistic? Is there another statistic that is most relevant? If so, which one?
A Manager needs to decide between two machines to put into market following a Weibull distribution. If the machines has a life of 20 hours which machine would go to market?
You are estimating the cost ($K) of optical sensors based on the power output of the sensor. Using the preliminary calculations from a data set of 8 sensors, determine the equation of the line.
what statement should be made about the null and alternative hypothesis based on sample data and significance level? what specific conclusion can be drawn about the price for square foot of warehouses
Find the (a) mean (b) median (c) mode and (d) midrange for the given sample data. Is there one time that is very different from the others?
Machine Y cost $500 to manufacture and has beta=5 and theta=500. If the machine will have a life of 30 hrs , which machine should brief to the boss to sell?
If the probability than an individual sample tests positive is 10%, what is the probability that a mixture of the three will test positive?
The sample mean will be in error by no more than 0.004 g. Find the sample size required. A pilot study showed that the population standard deviation is estimated to be 0.09 g.
The four targets only make up about 15 percent of the board, total. Would you play this game if you wanted to make money? What do we expert the value of the results of the game to be?
The players in the hat have Porsches in their garage at home. What is the likelihood that you will get to go to lunch with a quarterback who drives a Porsche?
Find the percentage of women meeting the height requirement. Are many women being denied the opportunity to join this branch of the military because they are too short or too tall?
Given the following information, would your decision be to reject or fail to reject the null hypothesis? Setting the level of significance at .05 for decision making, provide an explanation for your c
Car number two does not run about eleven days per year with a standard deviation of four days. Which car is more consistent about when it will and will not run? Why?
What is the predictive value of a negative test result? In other words, what is the probability that an individual who returns a negative tests for hypertension is not hypertensive? Please give your
"One of the largest species of trantulas is the Brazilian Giant Tawny Red. A tarantula has two body parts. Determine and interpret the quartiles for carapace length of the adult male G. mollicoma
If we consider the normal range of onset in this population to be +/-1 z-score from the mean, what two ages correspond to this?
Find the percentile rank for each value. Which value corresponds to the 40th percentile? Construct a boxplot for the data and comment on their shape.
Assume gasoline prices for a region are normally distributed. do the data you obtain provide enough evidence to reject the claim? use 1% level of significance.
Now the challenging questions: if the salesperson wants to be at least 90 percent confident of getting satisfactory evaluation in her job this week, how many demonstrations should she perform?
On a single draw from a deck of playing cards, the probability of selecting a heart is 1/4, the probability of selecting a black card is 1/2.
If the probability that an individual sample tests positive is 10%, what is the probability that a mixture of three will test positive?
Waldo Books needs to decide how many copies of a new hardcover release to purchase for its shelves. Which option should Waldo choose if they use the maximax criterion?
Scientist would like to know if mental health clients of private versus public service agencies differ on Global Assessment of Functioning (GAF) scores. Identify Independent Variable (s).