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

in the math equation 8 x 7 = 56, the 8 and the 7 are both factors of 56, since in this lesson we will use square tiles to figure out the factors of a whole find as many different arrays as you can, but follow one important rule: all the rows must have the i can make two rows of nine, so 2 and 9 are both factors of 18.

step-by-step explanation:

1. sometimes

2.   never

3   .08c = 7.50+.05c   250 pages

step-by-step explanation:

1.   sometimes

the theoretical probability of rolling a 1 is 1/6.   perhaps you got really lucky and never rolled a 1   in those 60 times.   your experimental probability is 0.   or perhaps you rolled a 1   20 times.   your experimental probability is 20/60 is 1/3.     it really just depends on how you rolled in that experiment.

2.   never

the probability of the event occurring is 1.   that is being 100 % sure it will happen.   that is the maximum amount of confidence we have.

3.   no customer card cost:   .08 times number of pages

customer card cost:   7.50 + .05 times number of pages

we want to find when it costs the same amount, so we will set these equal

let c = number of pages

.08c = 7.50+.05c

subtract .05c from each side

.08c-.05c = 7.5+.05c-.05c

.03c=7.5

divide each side by .03

.03c/.03 = 7.5/03

c =250  

the cost is the same at 250 pages

b

step-by-step explanation: