Please show work Find the percentage of data items in a normal distribution that lie between:

9. z=0.2 and z=1.4

11. z=1 and z=3

13. z=-1.5 and z=1.5

15. z=-2 and z=-0.5

Assume that a population of 50 individuals has the following numbers of genotypes for a gene with two alleles, b and b: bb = 30, bb = 10, and bb = 10. calculate the frequencies of the two alleles in the population’s gene pool.

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?