A market research firm supplies manufacturers with estimates of the retail sales of their products from samples of retail stores. Marketing managers are prone to look at the estimate and ignore sampling error. An SRS of 17 stores this year shows mean sales of 57 units of a small appliance, with a standard deviation of 11 units. During the same point in time last year, an SRS of 10 stores had mean sales of 68.99 units, with standard deviation 10 units. A decrease from 68.99 to 57 is a drop of about 21%. 1. Construct a 99% confidence interval estimate of the difference u - H2, Wwhere u is the mean of this year's sales and u is the mean of last year's sales. (a) < (41 - 42) < (b) The margin of error is 2. At a 0.01 significance level, is there sufficient evidence to show that sales this year are different from last year? O A. Yes OB. No

Q: Any change you can also provide detail for part D and part E?  Thank you!

A: Since part a-c is already solve and correct in my knowledge therefore i am solving part (d) and (e)

Q: d e a b c

A: To find the at which point function is maximum . Here to determine  maximum value by using  given…

Q: State and prove the intermediate value theorem.

A:

Q: Find the value of x. 108° (4х + 10)°, 67° 3x°

A: Find the value of x.

Q: If you can, please draw the grafic of this exercise

A: This question can be solved using the concept of drawing parametric curves.

Q: not use ai please

A: Step 1: Determine the Whole Cost of the RecipeWe compute the cost per recipe unit for each component…

Q: The circumference of a sphere was measured to be 72 cm with a possible error of 0.5 cm. Use linear…

A:

Q: Fint and classity the rehative extrema

A: Given: hx=ex3+x2 Differentiating hx with respect to x, h'x=ex3+x23x2+2x For critical points,…

Q: x H In the diagram, the large triangle is isosceles. Determine <x.

A: In any triangle angle opposite of equal sides are equal.   Sum of interior angles of a…

Q: T = (5, 7, 3, 8, 1) %3D 4. II *: =? Xi i=2

A: ∏i=24xi=7×3×8         =168

Q: Determine and explain why the following is discrete or continuous variable 1. income of a teacher…

A: A variable can be discrete or continous. Discrete variable are countably finite and it will be…

Q: This net can be folded to make a square pyramid. What is the surface area of the pyramid? 145 square…

A: We can find the surface area of the square pyramid as below

Q: You are asked to design a rectangular playground that is 19 feet longer than it is wide and should…

A: As per bartleby guidelines only first three subparts are to be solved. Please upload other parts…

Q: How can we find a Viewing Window?

A: The viewing window is the part of the coordinate plane that will be visible on your graphing…

Q: Are less than and greater than graphed with open circles or closed circles

A:

Q: Give at least two examples of continuous data measurements that are relevant to a business process

A: Data measurements can be categorized into 2, continuous and discrete. Discrete data or variables can…

Q: The length (in feet) of a student's room is considered discrete. continuous. both discrete and…

A: Discrete variable:   It is nothing but it takes or considers only the countable number of values or…

Q: Maximize the product of two positive numbers that sum to 300.

A: