Mathematics, 23.09.2019 11:10 ashleyprescot05
In a group of 45 children there are four times as boys as girls. how many girls are there?
Answers: 1
Mathematics, 21.06.2019 23:10
Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth
Answers: 2
Mathematics, 22.06.2019 02:30
An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 120 lb and 161 lb. the new population of pilots has normally distributed weights with a mean of 125 lb and a standard deviation of 28.1 lb. a)if a pilot is randomly selected, find the probability that his weight is between 120 lb and 161 lb.the probability is approximately? b. if 36 different pilots are randomly selected, find the probability that their mean weight is between 120 lb and 161 lb. the probability is approximately? c. when redesigning the ejection seat, which probability is more relevant? . part (b) because the seat performance for a single pilot is more important. b. part (b) because the seat performance for a sample of pilots is more important. c. part (a) because the seat performance for a sample of pilots is more important. d. part (a) because the seat performance for a single pilot is more important.
Answers: 3
Mathematics, 22.06.2019 03:40
Amanufacturer knows that their items have a normally distributed lifespan, with a mean if 9.1 years, and standard deviation of 2.9 years. if you randomly purchase one item, what is the probability it will last longer than 10 years?
Answers: 3
Mathematics, 22.06.2019 04:00
If y varies as x, and y=8 as x=4 what will be the value of y if x=2
Answers: 2
In a group of 45 children there are four times as boys as girls. how many girls are there?...
History, 24.11.2020 02:30
Engineering, 24.11.2020 02:30
Social Studies, 24.11.2020 02:30
Mathematics, 24.11.2020 02:30
History, 24.11.2020 02:40
Mathematics, 24.11.2020 02:40
History, 24.11.2020 02:40