At the 5% level of significance, which variables are statistically significant?  If the price of cement per yard increases by 10, what will happen to the estimated quantity of cement demanded? What happens if it will increase by 20%?

Q: The US Census in 2010 counted 308,745,538 people and there were 3,999,386 births that year. 1.)…

A: Given:

Q: A company's annual production of ethanol, used as fuel for automobiles, was 5.2 million gallons in…

A: We jave to find the time at which the production raises to 37M gallons

Q: Suppose that two post-sixteen students, A and B, both end their studies in the same percentile, but…

A:

Q: what was the percent decrease in orange production from 12,930 to 9,252

A: To determine the percentage decrease.

Q: Why does it make sense for the coefficient on psperc to be negative? What is the predicted…

A: 1. It makes sense that coefficient of psperc is negative because lower psperc means a better student…

Q: over a recent 4-day period, the number of commercial flights decreased by 7.36%. Assuming this trend…

A:

Q: The number of bushels of corn produced decreased from 14.3 billion bushels in 2018 to 13.7 billion…

A: to find out the percent decrease.

Q: Given Y = b0 + b1X. If b1 = -10, for every one-unit increase in X, what is the estimated impact on…

A: Solution-: (a) Given Y = b0 + b1X. If b1 = -10, for every one-unit increase in X, what is the…

Q: A sample of 3700 people were asked if they felt "good" about the economy. A 95% Cl for the…

A:

Q: entists studied the chemical makeup of buried tills (glacial drifts) in order to estimate the age of…

A: UMRB-13.774.053.813.233.133.33.21UMRB-23.324.093.95.063.853.88UMRB-34.064.563.63.274.093.383.37SWRA2…

Q: In many adverts an exercise product stated, using this product will burn 80% more calories, what is…

A: In an ad, this type of exercise product burn more than 80% calories. In implied connections there is…

Q: “Normal” BMI is up to 25 kg/m2. A laboratory study is being conducted to determine energy…

A: Given, The researcher already subtract 25kg/m2 in each of the person. After subtraction the mean was…

Q: (a) State the null and alternative hypotheses. OA. Ho: HCars = Hvans OB. Ho: HCars = HVans SUVs and…

A: By using  EXCEL, data - data analysis - ANOVA single factor ANOVA           Source DF SS MS…

Q: Given the data for 2015-16 and 2016-17 : Cоmmodity Commodity А B A B po 1 1 p1 go 10 5 91 5 where p…

A:

Q: Ecologists mapped a large Canadian forest plot dominated the Douglas fir, with an understory of…

A: Given Data:   Dead Live Sapling Total Western red cedar 48 214 154 416 Douglas fir 326 324 2…

Q: According to the CDC, cholesterol levels can be reduced by following a healthy diet, getting regular…

A: It is given that use the variables "Week 0", "Week 3", and "Week 6" in the data set.

Q: 1. What is KL? %23 3x X +6 K

A: Here we have to find the value of KL from the given triangle.

Q: What is the interpretation of the 95% confidence interval? With which hypotheses about the strength…

A: Given data :  P-value = 0.006 95% CI = 1.1 - 1.9

Q: Adrian and Casey want to know how much recyclable trash their apartment building generates on a…

A: Yes, this situation yields variable data, and therefore, can be written into a statistical question.…

Q: 6. If uz = 4.2 and oz = 0.10, what is the percent of a value being below 4?

A: Given that:   X¯~N( μx¯=4.2 , σx¯ =0.10)

Q: The number 0.000 045 56 expressed in scientific notation correct to 3 significant figures is:

A:

Q: In an outbreak of typhoid fever among attendees of an acquaintance party, 99 persons ate spaghetti,…

A: Given that:  n1=99  x1=30 n2=63 x2=20

Q: In a particular year, a study found that cars burn off 6% of gasoline during traffic jams. (a) If a…

A: the solution is given below

Q: 14. The population of Sacramento was 1,037,000 in 1988 and 2,123,000 in 2020. Find the average rate…

A: Introduction: The average rate at which one quantity changes in relation to another's change is…

Q: 19. How many times more intense is an earthquake measuring 8.2 on the Richter scale than an…

A:

Q: V25 =

A:

Q: A doctor was studying the efficacy of a particular medication in reducing the length of the common…

A: P(A) = n(A)n(Total)

Q: A researcher reports an F-ratio with df= 3,27 for an indenpendant measure research study. a. How…

A: a. The given degrees of freedom are 3,27. The number of treatment conditions were compared in the…

Q: 1   2   3   4   5   6   7   8   9   10   11   12   13   14   15   16   17   18…

A: The objective of this question is to find out how many pounds of an individual's weight is made up…

Q: Suppose that Colorado population grows consistently at 2.4% per year. If the 2021 colorado…

A:

Q: A bunch of hooligans dump 164 pounds of  pizza boxes into a lake. If the pizza boxes dissipates at a…

A:

Q: Suppose that Glitter Gulch, a gold mining firm, increased its sales revenues on newly mined gold…

A: (a) as we know sales=real output×price according to question sales increase from $110 million to…

Q: 24. A chocolate bar has been priced at $1.25 for a 52 gram bar. Due to vending machine restrictions,…

A: Initial price per gram: ​=0.024​ dollars/gramRevised price per gram: ​=0.026 dollars/gramTo find the…

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.