Refer to the accompanying data display that results from a sample of airport data speeds in mbps. complete parts  (a) through  (c) below.



click the icon to view a t distribution table.

tinterval

(13.046,22.15)

x overbarxequals=17.598

sxequals=16.01712719

nequals=50

a. what is the number of degrees of freedom that should be used for finding the critical value

t subscript alpha divided by 2tα/2?

dfequals=4949

(type a whole  number.)

b. find the critical value

t subscript alpha divided by 2tα/2

corresponding to a  95% confidence level.

t subscript alpha divided by 2tα/2equals=

 

nothing

(round to two decimal places as  neede

Aplot of land is shaped like a quadrilateral. fences are built on the diagonal to divide the area into 4 sections. what is vi to the nearest tenth? gv = 6.55fv = 5.84vh = 3.27vi = ?

It appears that people who are mildly obese are less active than leaner people. one study looked at the average number of minutes per day that people spend standing or walking. among mildly obese people, the mean number of minutes of daily activity (standing or walking) is approximately normally distributed with mean 376 minutes and standard deviation 64 minutes. the mean number of minutes of daily activity for lean people is approximately normally distributed with mean 528 minutes and standard deviation 107 minutes. a researcher records the minutes of activity for an srs of 7 mildly obese people and an srs of 7 lean people. use z-scores rounded to two decimal places to answer the following: what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 mildly obese people exceeds 420 minutes? what is the probability (image for it appears that people who are mildly obese are less active than leaner people. one study looked at the averag0.0001) that the mean number of minutes of daily activity of the 6 lean people exceeds 420 minutes?

Which of the following could be the ratio of the length of the longer leg 30-60-90 triangle to the length of its hypotenuse? check all that apply. a. 313 6 b. 3: 215 c. 18: 13 d. 1: 13 e. 13: 2 of. 3: 15