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In a casino game chuck-a-luck, three unbiased six-sided dice are rolled. One possible bet is $1 of fives, and the payoff is equal to $1 for each five on that roll. In addition, the dollar bet is ret
The variable on the x-axis of a scatterplot is called the ________ variable.
From candy to jewelry to flowers, average consumer was expected to spend $123.89 for Mother's Day 2009, according to April 2009 National Retail Federation survey.
With alternative formulation of the two-factor ANOVA model, considering that the major effects and interaction effects require constraints for identifiability, determine the number of free parameter
A manufacturer of batteries routinely tests its products to determine lifetime (hours of continuous usage). Suppose they select a sample of 30 AAA batteries and find that the average lifetime is 150
A locally owned spa, Alexanders, is interested in adding the tea room which not only offers specialty teas but organic lunch menu. In order to find out how many of its regular customers would be int
When Stephane plays chess against his favorite computer program he wins with the probability 0.60 loses with probability 0.10 and 30% of games result in a draw. Assume independence.
A box in a certain supply room haves three 40-W lightbulbs, seven 60-W bulbs, and six 75-W bulbs. Assume that three bulbs are randomly selected. (Round your answers to four decimal places.) Determi
Seventy-nine percent of the light aircraft which disappear while in flight in certain country are subsequently discovered. Of aircraft that are discovered, 66% have emergency locator, while 83% of t
For the month of January in the certain city, 52% of days are cloudy. Also in the month of January in the same city 39% of the days are cloudy and raining. Determine the probability that a randomly
Which type of t-test should be used? Compute the two-tailed t and p values using this t test. Compute the one-tailed t and p values using this t test.
Assume that a player draws card at random from pack of cards, and wins $15 if an ace, king, queen, or jack is obtained, and otherwise wins face value of the card in dollars. What is the expected am
The life in hours of a thermocouple employed in furnace is known to be approximately normally distributed, with standard deviation ? = 20 hours. A random sample of 15 thermocouples resulted in the f
The final points in a statistical course are normally distribution with a mean of 70 and a standard deviation of 10. The professor wants to grade on a curve, and decides to give out 10% A's, 30% B's
The company set length of its warranty to answer in (a). Now they want to enhance the reliability of its TV. How much they need to enhance the mean so that they will only replace 0.5% of their TVs g
A box contains 4 blue hats and 21 red hats. You choose four hats from the box. Determine the expected number of blue hats in your selection
An incoming lot of silicon wafers is to be inspected for defectives by an engineers in a microchip manufacturing plant. In a tray containing 20 wafers, assume 5 are defectives. Four wafers are to be
Assume a mouse weighing 20 grams has a 78 mm tail. Determine the residual for this mouse? Be sure to think about whether the y value of 78 is above the line (and thus has a positive residual) or bel
In bayesian estimation of the mean of normal distribution x1,......xn , n(theta, sigma^2) using double expoential as prior , ( e^-abs(theta)/b)/2b where b is known, what is their joint distribution?
A survey of American pet owners was conducted. Each individual was asked "how many pets do you own?" The following statement ws made, "we are 95 percent confident that the mean number of pets owned
Find out the point estimate for this populations. (use either x? or p?) Find the margin of error.
The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of five minutes and a standard deviation of two minutes.
Seventy-six percent of light aircraft which disappear while in flight in certain country are subsequently discovered. Of the aircraft that are discovered, 64% have an emergency locator,
Assume that 1% of the population have a disease called stataphobia. There is diagnostic test with 0.95 probability of being positive when a person has stataphobia and 0.8 probability of being negati
According to a survey, 42% of Americans never watch programs recorded from TV. Assume four Americans are chosen at random. Determine the probability that all four never watch programs recorded from TV