The following data show the of number of shoes (in 1000 units) sold by a new shoe      manufacturing  company in the 8 consecutive months of 2020:                           Month             # Sold             Month             # Sold                 ---------------------------------------------------------------------                         January              8.42       |       May                     11.14                         February            9.67       |       June                     10.61                         March                10.42     |       July                    12.50                         April                  10.90     |       August                12.82     Hand Estimate a linear trend model for the monthly sales of the company. Predict the number of shoes sold in September and October.

-ons Help Last edit was seconds ago Arial 9. BIU A + + ... 4. JOYFUL Fashion Company is reviewing the monthly sales in year 2021.The monthly sales (in millions) of each month were as below: Jan: $2.2 Feb: $2.5 Mar: $2.0 Apr: $2.8 May: $1.9 Jun: $0.9 Jul: $3.4 Aug: $3.7 Sep: $2.1 Oct: $2.5 Nov: $2.3 Dec: $4.6 (a) Find the mean, mode, standard deviation, and range of the above data. (b) Comment on the skewness of the above data. Explain your answer with the comparison of quartiles. The JOYFUL Fashion Company will issue a Gold Membership to customers with accumulated spending in January 2022 over 1% of 2021's average monthly sales and a Platinum Membership to customers with accumulated spending in January 2022 over 1% of the 80m percentile of 2021's monthly sales. (c) Mrs. Robinson has spent $27,450 in January 2022. Will she be qualified for the Gold Membership? Will she be qualified for the Platinum Membership? Explain your answers. (d) It is known that the average monthly sales from Jul…

Part 1 of 3: A company was checking the number cars that parked in their lot each day and they estimated the population standard deviation was 1.6 cars. A sample of 45 days found that the mean number of cars was 13.2.   Find 3-decimal small value of the 90% confidence interval of the mean.     Part 2 of 3: Find 3-decimal large value of the 90% confidence interval of the mean.   Part 3 of 3: What is the 3-decimal margin of error?

75 out of 100 as a percentage

The following table shows the square footage of houses in an area that sold recently along with the selling price. Sq. Ft. Price 2096, 295000, 3160, 338000, 2320, 265000, 3150, 365000, 2760, 330000, 3650, 412000, 2125, 320000, 3085, 342000, 4750, 485000, 2100, 320000, 3100, 316000, 2240, 321000, 3300, 347000, 2800, 350000, 2825, 330000, 3275, 420000 1. Find the equation of the regression line (line of best fit). 2. Determine if there is a strong linear correlation. 3. If there is a strong linear correlation predict the selling price of a 3333 sq. ft. home

Suppose that 33% of McMaster undergraduate students are in their first year. President David Farrar likes to walk around and ask random students how they like the university. On average, how many students (could be a decimal number) will Dr. Farrar need to talk to before he finds a first year student? answer correct to 2 decimals

please solve for the following

Construct a Divided Difference table, given y = 2x* – 9x3 + 4x²-10 @ x= 1, 2, 4, 6, 7, 8, 9, 11

The scores of a test for an engineering class of 30 students are shown here. (Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign.) Scores: 81, 54, 55, 56, 96, 86, 98, 61, 90, 52, 92, 76, 66, 84, 79, 70, 71, 88, 62, 74, 53, 65, 55, 78, 79, 58, 60, 72, 51,80 (a) Determine the frequency (f), midpoint (x), and xf for each range and fill in the table below. (First, organize the scores into the following ranges: 50-59, 60-69, 70-79, 80-89, and 90-99.) (b) Using the following equation, determine the mean value (x) and fill in the table below. Σ(XA) n X = (c) Calculate (x − x) for each range and fill in the table below. (d) Calculate (x - x)²f for each range and fill in the table below. Range Frequency f Midpoint x 50-59 60-69 70-79 80-89 90-99 S = Enter a number. S = (e) Using the following equation, compute the standard deviation of the class scores. Σ(x-x) ²f n - 1 Σ(x-x) ²4 n - 1 = xf 29 X X - X (x - x)²f

suppose 15 percent of the computers in some university labs are defective