karen wants to advertise how many chocolate chips are in each big chip cookie at her bakery. she randomly selects a sample of 75 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 9.7 and a standard deviation of 2.8. what is the 90% confidence interval for the number of chocolate chips per cookie for big chip cookies? round to the nearest 3 decimal

Emily and her feiends qent to the park. they saw 15 robins and 9 blue jays. how many birds did they see? explain how you decided what number sentence to write.

(a) what was jennifer's gross pay for the year? (b) how much did she pay in state income tax? (c) the amount in box 4 is incorrect. what dollar amount should have been entered in box 4? (d) the amount in box 6 is incorrect. what dollar amount should have been entered in box 6? (e) how much was jennifer's fica tax? (f) jennifer's taxable income was $32,104. she's filing her taxes as head of household. does she owe the government more in taxes, or will she receive a refund? how much will she owe or receive?

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4