Alex's home run hitting distance is normally distributed with a mean of 410 feet and a standard deviation of 29 feet. He wanted to find the probability that his home runs
traveled at least 375 feet. He calculated the z-score to be -1.21 and looked up the
probability on the Standard Normal Probabilities table. He found that the table
stated his probability as 0.1131. Determine whether Alex made an error in his
calculation and explain. (4 points)
Yes, he made an error. Because he was seeking the probability that his home
1) runs traveled at least 375 feet, he looked up -1.21 and failed to subtract the
probability from 1. The correct probability is 0.8869.
2) Yes, he made an error. He failed to add 1 to the probability, because he was
seeking the probability that his home runs travel at least 375 feet. The
correct probability is 1.1131.
3) No, he did not make an error. He looked up -1.21 on the table and the
probability reads 0.1131.
4) No, he did not make an error. The table contains incorrect information. 5) It cannot be determined whether Alex made an error

step-by-step explanation: so we look at the formula un = a + (n-1)d

un is the amount of seats

n is the nth term aka row number

a is the original sequence/row number

d is the difference between each term

so in this a=22 d=6 and n can remain as n because we are simply formjng a rule

lets put these in the equation

un=22+(n-1)(6)

this is your answer to part a

however

lets double check that this is correct, we'll try putting it into the second term

un=a+(n-1)d

u2=22+(2-1)(6)

u2=22+6

u2=28

as the question said the second row has 28 seats so now we know the formula we made is correct.

as for part b

un=a+(n-1)

its asking us to find a row with 100 seats.

remember un was the amount of seata so all we do is substitute this in.

un=100 a=22 d=6

un=a+(n-1)d

100=22+(n-1)(6)

so now we simplify to find n which is the row number.

100-22=22+(n-1)(6)-22

78=(n-1)(6)

78/6=(n-1)(6)/6

13=n-1

13+1=n-1+1

14=n

so now we know that in the 14th row there is 100 seats.

hope this and that you understood! its my first time using the app or anyone out on here : p its also me to revise so a bunch! ask more questions if you dont understand ☺

answer: 0.26

i used the calculator on google