Students at a University participated in physical training Each student a followed the distribution with mean 7.15 minutes and standard deviation 0.74 minute A SRS of 100 has mean 6.97 Determine the probability that the SRS 100 students will have a mean time of 6.97 minutes or less Find the z score (round to two decimals)

3/20

step-by-step explanation:

well, there are 20 outcomes, and 3 of them you want. so, 3/20

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

cause it equals more

8(1/6)

step-by-step explain:

49/6= 48

8 (1/6)