A random sample of daily calorie intakes for people in a given city has a sample mean of x¯=1937 cal and sample standard deviation of s=149 cal. Use the Empirical Rule to determine the approximate percentage of daily calorie intakes that lie between 1490 and 2384 cal. Round your answer to the nearest tenth.

Suppose there are 10 five and six-year-old attending a birthday party. when a 30 year old mother walks into the room with an infant in her arms, what happens to the mean age in the room? what happens to the standard deviation of ages in the room? a. the mean and standard deviation of both change. b. the meaning will change, but the standard deviation will stay approximately the same. c. i mean will stay approximately the same, but the standard deviation will change. d. the mean and standard deviation will both stay approximately the same.

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*