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MATH SOLVE
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What is the proper solution to the following equation? (151.1 + 2.45 + 3.675) ÷ (0.660 + 0.3470) = 1. 1.561321 × 102 2. 1.56 × 102 3. 1.56132 × 102 4. 1.5613207 × 102 5. 1.5613 × 102 6. 1.5 × 102 7. 1.561 × 102 8. 2 × 102
General
2 months ago
In a semiconductor manufacturing process, three wafers from a lot are tested. Each wafer is classified as pass or fail. Assume that the probability that a wafer passes the test is 0.7 and that wafers are independent. Determine the probability mass function of the number of wafers from a lot that pass the test. Round your answers to three decimal places (e.g. 98.765).
General
2 months ago
The following observations are given for two variables. x y 2 7 6 10 9 13 11 18 11 21 12 25 7 12 4 7 a. Compute the sample covariance for the above data (rounded to the nearest hundredths). What does the covariance tell us using the context of the problem. (3 points) b. Compute the standard deviation for x (rounded to the nearest hundredths). (2 points) c. Compute the standard deviation for y (rounded to the nearest hundredths). (2 points) d. Compute the sample correlation coefficient (rounded to the nearest hundredths). What does the correlation coefficient tell us that the covariance does not using the context of the problem. (3 points)
General
2 months ago
A researcher wants to know how undergraduate college students at her university feel about federal financial aid. She obtains a list of 1196 undergraduate college students at her university, selects 500 of them at random, and emails a questionnaire to them. 107 questionnaires are returned. Of these, 71% stated that they believe that the federal student loan program needs to be completely overhauled. Classify the following groups as the population or the sample for this particular study. If a group does not belong in either category, leave it unplaced.
General
2 months ago
I need the answer please. Because I think i got mine wrong
General
2 months ago
(7*10^x)+(7*10^y)+(7*10^z)=700070.07Write all possible set of values for x, y, z with the working. Plz help
General
2 months ago
2x – 3y - 9z = 113x + 3z= – 5-3x + y - 4z = 8 solve for x,y,z
General
2 months ago
Mrs Lim packs 35 big and small bags of candies for her pupils. Each big bag contains 12 candies and each small bag contains 7 candies. The bags contain 300 candies altogether. How many big bags of candies and how many small bags of candies does she pack?
General
2 months ago
Using Descartes' Rule of Signs, we can tell that the polynomial P(x) = x5 − 2x4 + 5x3 − x2 + 4x − 4 has, from smallest to largest, 1 , 2 , or 3 positive real zeros and 4 negative real zeros.
General
2 months ago
The polar coordinates of a certain point are (r = 2.75 cm, θ = 219°). (a) Find its Cartesian coordinates x and y. x = cm y = cm (b) Find the polar coordinates of the points with Cartesian coordinates (−x, y). r = cm θ = ° (c) Find the polar coordinates of the points with Cartesian coordinates (−2x, −2y). r = cm θ = ° (d) Find the polar coordinates of the points with Cartesian coordinates (3x, −3y). r = cm θ = °
General
2 months ago
Suppose you drive 22,000 miles a year and gas averages $3.45 a gallon. What would you save by driving a hybrid that averages 38mpg versus a SUV that averages 21 mpg?Compute the savings in fuel expenses,$(Simplify your answer. Round to the nearest dollar as needed.)
General
2 months ago
Suppose that 1 month before the election a random sample of 500 registered voters are surveyed. From this sample 270 indicate that they plan to vote for Smith. Based on this survey data, find the 95% confidence interval estimate of Smith’s current support.
General
2 months ago
y varies inversely as x. If x = 8 then y = 4. Find y when x = 6.y =
General
2 months ago
9. Stan’s Deli is situated inside a large industrial park. The weekday gross sales at Stan’s average $1,240, with a standard deviation of $180. Find the probability that the average over the next 40 weekdays will exceed $1,200. Please note the assumptions that are used in making the calculation.
General
2 months ago
Newly purchased tires of a particular type are supposed to be filled to a pressure of 30 psi. Let m denote the true average pressure. A test is to be carried out to decide whether m differs from the target value. Determine the P-value for each of the following z test statistic values.a. 2.10b. -1.75c. -.55d. 1.41e. -5.3
General
2 months ago
The federal government would like to test the hypothesis that the average age of men filing for Social security is higher than the average age of women. If population 1 is defined as men and population 2 is defined as women the correct hypotheses are
General
2 months ago
write a linear equation that represents the cost of buying t-shirts from Paula's printing. identify the meaning of each variable in your equation.write a linear equation that represents the cost of buying t-shirts from shantay's shirts. identify the meaning of each variable in your equation.
General
2 months ago
A coordinate plane from negative 8 to 8 along the x-axis and from negative 7 to 7 along the y-axis. Which steps should be used to graph the equation y – 4 = y minus 4 equals StartFraction one-third EndFraction left-parenthesis x plus 2 right-parenthesis.(x + 2)? 1. Plot the point (2, 4). 2. From that point, count left 3 units and down 1 unit and plot a second point. 3. Draw a line through the two points. 1. Plot the point (2, 4). 2. From that point, count left 1 unit and down 3 units and plot a second point. 3. Draw a line through the two points. 1. Plot the point (–2,4). 2. From that point, count left 3 units and down 1 unit and plot a second point. 3. Draw a line through the two points. 1. Plot the point (–2,4). 2. From that point, count left 1 unit and down 3 units and plot a second point. 3. Draw a line through the two points.
General
2 months ago
The Gardenview Hotel is seventeen less than twice the height of the Plaza Hotel. If their combined height is 361 feet, how tall is the Gardenview Hotel?
General
2 months ago
Consider the following function.f(x) = 16 − x2/3Find f(−64) and f(64).
General
2 months ago
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