Statistics

Which of these probability distributions can be used to estimate the number of vehicles that go through an intersection during the lunch hour? Triangular Binomial Poisson Normal Clear my selection

cheh og agn. Fav gatls and sox boys are in a Spanish club. Three of the people will be chosen at randsm to represent the group in a What is the probatelity that one girl and two boys will be chosen? 50% 70% 60% 40%

Find the probability of the indicated event if PE=0.25 and PF=0.40. Find PE and F if PE or =0=0.45 PEand F=square Simplify your answer.

A researcher is interested in differences between men and women on fatalism. She knows that on average women score 50 on fatalism sd=10 group of 25 men scored 45. She wants to know the range of means that likely fall about the unknown parameter. For this scenario, We would fail to reject H_A We would reject H_A We would reject H_0 We ...

A researcher is planning a study where the explanatory variable is the number of days a student missed class and the response variable is the score on the final exam. The researcher finds r=-0.921 and the scatterplot appears to be linear. Which of the following statements would best describe the scatterplot? Scatter dots are fairly dispersed and trending upw...

ol 2 A survey of 500 randomly selected high school students determined that 191 play organized sports. a What is the probability that a randomly selected high school student plays organized sports? b Interpret this probability. _ a The probability that a randomly selected high school student plays organized sports is 0.382 ° Round to the nearest thous...

A sum greater than or equal to 4 P sum greater than or equal to 4=square frac square square

A regression was run to determine if there is a relationship between hours of TV watched per day x and number of situps a person can do y. The results of the regression were: y=ax+b a=-1.246 b=31.775 r2=0.632025 r=-0.795 Use this to predict the number of situps a person who watches 7.5 hours of TV can do to one decimal place Check Answer

Computer purchases: Out of 784 large purchases made at a computer retailer, 349 were tablets, 384 were laptop computers, and 3 computers. As a part of an audit, one purchase record is sampled at random. Round the answers to four decimal places, as needed. Part: 0 / 2 Part 1 of 2 a What is the probability that it is a desktop computer? The probability that it...

Historically, the time spent by DCSI3710 students on trying to certify any HLS homework is known to have a mean of 35 minutes. In order to examine the claim that homework 12.2 was actually more time consuming, an instructor asked 16 students how much time they spent on it. What is the Alternative hypothesis for this problem? Ha: mu ≥ 35 Ha: mu =35 Ha: mu >35...