Selected Technologies According to recent surveys, 60% of households have personal computers. If a random sample of 150 households is selected, what is the probability that more than 59 but fewer than 76 have a personal computer? Round z-value
calculations to 2 decimal places and final answer to at least 4 decimal places.
P(59

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92