subject

Mathematics, 26.03.2021 03:10 natalie2sheffield

A fourth grade teacher gives homework every night in both mathematics and language arts. The time to complete the mathematics homework has a mean of 10 minutes and a standard deviation of 3 minutes. The time to complete the language arts assignment has a mean of 12 minutes and a standard deviation of 4 minutes. The time to complete the mathematics and the time to complete the language arts homework has a correlation rho = -0.75. The variance of the time to complete the entire homework assignment is

ansver

Answers: 1

Show answers

Another question on Mathematics

question

Mathematics, 21.06.2019 18:00

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

Answers: 3

question

Mathematics, 21.06.2019 18:20

What value of x is in the solution set of 4x - 12 s 16 + 8x? -10 -9 -8 -7

Answers: 1

question

Mathematics, 21.06.2019 18:30

Do some research and find a city that has experienced population growth. determine its population on january 1st of a certain year. write an exponential function to represent the city’s population, y, based on the number of years that pass, x after a period of exponential growth. describe the variables and numbers that you used in your equation.

Answers: 3

question

Mathematics, 21.06.2019 23:10

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?

Answers: 2

You know the right answer?

A fourth grade teacher gives homework every night in both mathematics and language arts. The time to...

Questions

question

Mathematics, 18.07.2020 01:01

A scientist is studying the growth of a particular species of plant. He writes the following equation to show the height of the plant f(n), in cm, aft...

question

Business, 18.07.2020 01:01

Determine the market price that Firm A receives for its product. Assume the price is constant because the firm is a price taker in a perfectly competi...

question

Business, 18.07.2020 01:01

The purchasing agent located a new source of slightly higher-quality plastic, and this material was used during the first week in January. Also, a new...

question

Biology, 18.07.2020 01:01

A B С D In which location is glucose formed? Location A O Location B Location C Location D...

question

Mathematics, 18.07.2020 01:01

This is the graph of f(x). what is the value of f(2)?...

question

Chemistry, 18.07.2020 01:01

How many grams of water are needed to dissolve 27.8 g of ammonium nitrate NH 4NO 3 in order to prepare a 0.452 m solution?...

question

Computers and Technology, 18.07.2020 01:01

Describe an organizational information situation where data availability would be more important than data integrity or confidentiality....

question

Mathematics, 18.07.2020 01:01

Please can someone please help me I need help please help me thank you

question

Advanced Placement (AP), 18.07.2020 01:01

Imagine an athlete several days after a concussion. She is still feeling a little out of it, but her friends and teammates are really starting to pres...

question

Mathematics, 18.07.2020 01:01

You want to find out whether caffeine mitigates the effect of alcohol on motor control. To study this, you administer to your subjects a drink that is...

question

Biology, 18.07.2020 01:01

Bacteria with the ability to break down certain types of plastic are placed with a colony of E. coli bacteria that lack this ability. Plasmid transfer...

question

English, 18.07.2020 01:01

In 3–5 complete sentences, thoroughly explain how the protagonist in your Module One short story changes because of the conflict he or she faces. Prov...

question

English, 18.07.2020 01:01

Select the correct answer from each drop-down menu. Antigone is a classic example of a Greek tragedy. The purpose of tragedy is to produce , that is,...

question

Biology, 18.07.2020 01:01

A tropical rainforest includes trees, animals, insects, plants, rain, rivers, rocks, soil, and warm, moist air. Which spheres of Earth are represented...

question

Biology, 18.07.2020 01:01

n the lab, you will change the number of birds with each beak phenotype for the second and third generations. What row of the data table will be the b...

question

English, 18.07.2020 01:01

In the final circle of Hell, what type of sinners are being punished? 116A. Those who cheat others through unfair business dealingsB. Tho...

question

Mathematics, 18.07.2020 01:01

If the number of equally likely sample outcomes of a single stage of an experiment is 4, what is the total number of elements in the sample space if t...

question

Mathematics, 18.07.2020 01:01

Heather is writing a quadratic function that represents a parabola that touches but does not cross the x-axis at x = –6. Which function could Heather...

question

Computers and Technology, 18.07.2020 01:01

When reviewing starter motor classifications, Technician A says starters are grouped by type of pinion gear engagement. Technician B says starters are...

question

English, 18.07.2020 01:01

The time machine chapter 2...

More questions: Mathematics Another questions

Questions on the website: 13722362