Help me please!

[Kinda Bottlenecked]

I'm stuck. This math problem has me pulling my hair off my head

I need help pls :'<

(im sorry if this is against coc)

 

[Shally]

For 10 marks  :blink:  Maybe give up in life, work in Maccies and only have to know how much a cheeseburger is

[zappian]

This is binomial distribution AFAIK.

 

Its been 5 years almost , sorry cant help you.

[jayctech]

(a)

P(x>=a) == 1 - P(x<a)

=> 1 - P(x<a) = 0.01

=> P(x<a) = 0.99

Look up the value that gives 0.99 in the normal distribution table.

 

(a-38)/6 = [value off table]

 

Something like that if I remember correctly. My memory is too shaky to be sure anymore or be bothered to try the others. This is also working off the assumption that the task isn't to get an estimate using a different distribution.

[Kinda Bottlenecked]

 

(a)

P(x>=a) == 1 - P(x<a)

=> 1 - P(x<a) = 0.01

=> P(x<a) = 0.99

Look up the value that gives 0.99 in the normal distribution table.

 

(a-38)/6 = [value off table]

 

Something like that if I remember correctly. My memory is too shaky to be sure anymore or be bothered to try the others. This is also working off the assumption that the task isn't to get an estimate using a different distribution.

 

Thanks for solving! but now my problem is C)  D: