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Statistics and Probability
A baseball team has scheduled its opening game for April 1. It is assume that if it snows on April 1, the game is postponed and will be play on the next day that, it does not snow. The team purchased insurance against snow. The policy will pay GHS 1,000 for each day, up to 2 days that the game is postponed. It is determined that the number of consecutive days of snow beginning on April 1, is a Poisson random variable with mean 0.6. What is the standard deviation of the amount that the insurance company will have to pay.
Statistics and Probability
A recent study shows that the annual cost of maintaining a building in Accra averages200 Cedis with a variance of 260 Cedis. If a tax of 30% is introduced on all itemsassociated with the maintenance of building i.e. everything is made 30% more expensive.Calculate the standard deviation of the annual cost of maintaining a building in Accra
Statistics and Probability
Spanish: Los pesos (lb) de plástico desechado de una muestra de hogares son 62 con una media de 1,911 lb y la desviación estándar es 1,065 lb. Use un nivel de significancia de 0,05 para probar la afirmación de que el peso promedio de plástico desechado de la población es mayor de 1,800 lb.
English: The weights (lbs) of discarded plastic from a household sample are 62 with an average of 1,911 lbs and the standard deviation is 1,065 lbs. Use a significance level of 0.05 to test the claim that the population's average weight of plastic waste is greater than 1,800 lbs.
Statistics and Probability
The weights (lb) of discarded plastic from a sample of households are 62 with a mean of 1,911 lb and the standard deviation is 1,065 lb. Use a 0,05 significance level to test the claim that the mean weight of discarded plastic from the population is greater than 1,800 lb.
Statistics and Probability
A baseball team has scheduled its opening game for April 1. It is assume that if it snows on April 1, the game is postponed and will be play on the next day that, it does not snow. The team purchased insurance against snow. The policy will pay GHS 1,000 for each day, up to 2 days that the game is postponed. It is determined that the number of consecutive days of snow beginning on April 1, is a Poisson random variable with mean 0.6. What is the standard deviation of the amount that the insurance company will have to pay.
Statistics and Probability
A financial analyst has found out that policyholders are four times as likely to file two claims as to file four claims. If the number of claims filed has a poison distribution, what is the variance of the number of claims filed
Statistics and Probability
Which will have a continuous probability distribution
a) The length of a cut piece of wood
b) The number of marbles in a bag
c) The number of children in a family
d) The mass of fish caught
a) The length of a cut piece of wood
b) The number of marbles in a bag
c) The number of children in a family
d) The mass of fish caught
Statistics and Probability
A recent study shows that the annual cost of maintaining a building in Accra averages 200 Cedis with a variance of 260 Cedis. If a tax of 30% is introduced on all items associated with the maintenance of building i.e. everything is made 30% more expensive. Calculate the standard deviation of the annual cost of maintaining a building in Accra.
Statistics and Probability
An agency is conducting performance tests on different brands of skateboards.Tests show that the pressure, in pounds per square inch, required to break the boards is normally distributed with a mean of 54.7 and a standard deviation of 6.2.
a) What percent of the boards have breaking pressures between 50 and 60?
b) What is the probability that any board will require will require at least a pressure of 70 to break?
c) In what range centered on the mean will 80% of the data lie?
a) What percent of the boards have breaking pressures between 50 and 60?
b) What is the probability that any board will require will require at least a pressure of 70 to break?
c) In what range centered on the mean will 80% of the data lie?
Statistics and Probability
Two teachers have classes of similar sizes. After the final exams, the mean of the grades in each class is 73%. However, one class has a standard deviation of 4% while the other is 8%. In which class would a mark of 90% be more meaningful?
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#340153 on Dec 2023
#340153 on Dec 2023