The amount of sugar in a Krispy Kream glazed donut is 10 grams. Many people feel that cereal is healthier alternative for children over glazed donuts. Assume the table below contains the amount of sugar {in grams) in a random sample of cereals that are geared towards children. Estimate the mean amount of sugar in all Children's cereals using a 91% confidence level. sugar amount in grams _\\ J}. _x N _' N P: Parameter What is the correct parameter symbol for this problem? -"6' What is the wording of the parameter in the context of this problem? The mean sugar amount of all children's cereals v V d' A: Assumptions o Since quantitative v V 6' information was collected from each object, what conditions do we need to check? Check all that apply. an2 10 0' is known C] no outliers in the data C] n 2 30 or normal population C] outliers in the data C] N 2 201% Una) 2 10 Dn(1p) 2 10 Dn(1f)) 2 10 C] 0' is unknown Check those assumptions: 1. Is the value of 0' known? -" 6' 2. Which of the following is the correct modified boxplot? sugar amount in grams Q Q) Check those assumptions: 1. Is the value of 0' known? -/ 0\" 2. Which of the following is the correct modified boxplot? sugar amount in grams l | | | 10 I] I2 13 sugar amount in grams 0 I I I I 10 I] 12 13 sugar amount in grams 0 | | | I] 12 13 sugar amount in grams 0 Are there any outliers? No, the modied boxplot shows no outliers. v V o\" Are there any outliers? No, the modied boxplot shows no outliers. v V o' Is it reasonable to assume the population is normally distributed? Yes since the normal probability plot is roughly linear with no outliers. v '/ o\" N: Name the procedure The conditions are met to use a T-lnterval v V o\" . I: Interval and point estimate The symbol and value of the point estimate are as follows: (Round answer to 1) The interval estimate for -'/ o' is as follows: (Round endpoints to 1 decimal places and use units exactly as stated in the problem) (:1 :1, :1 :1) C: Conclusion 0 We are C] 96 confident that the The mean sugar amount of all children's cereals v '/ o\" is between C] grams and C] grams
