Find the mean, variance and standard deviation for the given data. 1, 4, 2, 6, 2, 6, 7, 3, 5, 5
In how many ways can you pick a team of 5 people from a group of 12.
In how many ways can the letters abbbccd be arranged?
A card is selected from a deck and replaced. If this experiment is repeated a total of 7 times Find the probability of selecting exactly 4 hearts.
Sam found how many hours of sunshine vs how many ice creams were sold at the shop from Monday to Friday. Use the given data.
Calculate the margin of error if,
A sample of 500 circuit boards yields 2 defective boards after testing. What would be confidence interval for the true proportion of circuit boards in the lot from which the sample was drawn. Use 90% confidence level.
In general, the mean height of women is 65″ with a standard deviation of 3.5″. What is the probability of finding a random sample of 50 women with a mean height of 70″, assuming the heights are normally distributed?
What is the t – score for someone 6 feet tall. If the sample mean is 5’8’’, and estimated standard deviation is 3 inches.
Over a very long period of time, it has been noted that on Friday’s 35% of the customers at the drive-in window at the bank make deposits. What is the probability that it takes 6 customers at the drive-in window before the first one makes a deposit?