Mathematics, 05.12.2019 03:31 21hendlill

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

Answers: 3

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