What are you drinking? Environmental Protection Agency standards require that the amount of lead in drinking water be less than 15 micrograms per liter. Twelve samples of water from a particular source have the following concentrations, in units of micrograms per liter. Assume the population standard deviation is aS. if appropriats, perform a hypothesis test to determine whether you can conclude that the mean concentration of lead meets the EPA standards. Use the a0.01 level of significance an the P-value method with the TI-84 calculator. 11.7 14.4 11.6 14.6 159 S.7 12.5 8.9 11.4 17.7 9.S 15.7 Send data to Excel Part 1 of 6 Explain why it is necessary to check that the population is approomately normal before performing a hvpothesie test. It is necessary to check that the population is appreximately nomal because the sample size is small ns30 Part 2 of 6 Following is a dotplot of the data. Is it reasonable to assume that the population itappromately normal 14 Itlis reasonable to assume that the population is appr eane Part 3 of 6 State the appropriate null and alternate hypotheser. HH- 15 HA< 15

Q: A. Two golfing venues offer bays that customers con reserve to play various golf ing games. The…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: I need help

A:

Q: Need a little help

A:

Q: Consider the differential equation y'(x) = xeU – x.

A:

Q: Direction of opening: Zeros: y-intercept: Vertex: Axis of Symmetry: Max or Min Value:

A:

Q: W 4. A cell phone company claims that the average time a person spends on their phone is 12.8 hours…

A: Let μ denote the population mean and x⎯⎯ denotes the sample mean. Then, μ=12.8 and x⎯⎯=12.2 Let n be…

Q: can you help ?

A:

Q: se Taylor senes to find the partal sum that will approximate the integral Within .01. approximate…

A: To approximate the below integral and find the partial sum that will approximate the integral to…

Q: Sample Count Sample Proportion Color Red 9. Brown Yellow 6. Green 10 Orange 12 Blue 9. Total 54…

A: Sample proportion for each color can be calculated as follows:

Q: I need help

A:

Q: I need help

A: Solution: The objective is to find the value of x

Q: I need help

A: Given,  ∆JKL with KL = 11 ;  LJ = 12   and  JK = 4 We have to find the true statement about the…

Q: 3. (z, y)(1.5x, 1.5y) A' will be located at ( B' will be located at ( C' will be located at (

A: We have given the scalar factor i.e . (x,y)=(1.5x,1.5y)

Q: please explain  and show all parts

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…