1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
SVEN [57.7K]
2 years ago
7

on a test, 20 problems were given. five points were given for each correct anawer, and 2 points deducted for each incorrect answ

er. How many correct answers are required to score 79 on the test?
Mathematics
1 answer:
Sindrei [870]2 years ago
4 0
You cant technically get a 79 unless you get 3 point for a question 
You might be interested in
What are the factors of x^2 + 3x -4 ?​
algol13

Answer:

1 and -4

Step-by-step explanation:

cause when you factor the equation its (x-1)(x+4)

4 0
3 years ago
Read 2 more answers
During the 7th examination of the Offspring cohort in the Framingham Heart Study, there were 1219 participants being treated for
AlexFokin [52]

Answer:

95% confidence interval for the proportion of the population which are on treatment is [0.3293 , 0.3607].

Step-by-step explanation:

We are given that during the 7th examination of the Offspring cohort in the Framing ham Heart Study, there were 1219 participants being treated for hypertension and 2,313 who were not on treatment.

The sample proportion is :  \hat p = x/n = 1219/3532 = 0.345

Firstly, the pivotal quantity for 95% confidence interval for the proportion of the population is given by;

      P.Q. = \frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } }  ~ N(0,1)

where, \hat p = sample proportion = 0.345

           n = sample of participants = 3532

           p = population proportion

<em>Here for constructing 95% confidence interval we have used One-sample z proportion statistics.</em>

So, 95% confidence interval for the population​ proportion, p is ;

P(-1.96 < N(0,1) < 1.96) = 0.95  {As the critical value of z at 2.5% level of

                                                         significance are -1.96 & 1.96}

P(-1.96 < \frac{\hat p-p}{\sqrt{\frac{\hat p(1-\hat p)}{n} } } < 1.96) = 0.95

P( -1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } } < {\hat p-p} < 1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } } ) = 0.95

P( \hat p-1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } } < p < \hat p+1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } } ) = 0.95

<u>95% confidence interval for p</u>= [\hat p-1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } } , \hat p+1.96 \times {\sqrt{\frac{\hat p(1-\hat p)}{n} } }]

    = [ 0.345-1.96 \times {\sqrt{\frac{0.345(1-0.345)}{3532} } } , 0.345+1.96 \times {\sqrt{\frac{0.345(1-0.345)}{3532} } } ]

    = [0.3293 , 0.3607]

Hence, 95% confidence interval for the proportion of the population which are on treatment is [0.3293 , 0.3607].

6 0
3 years ago
7.4375 as a mixed number in simplest form
Grace [21]

(7 and 7/16) is the simplest form.
5 0
3 years ago
Regression analysis involving one dependent variable and more than one independent variable is known as a. linear regression. b.
Greeley [361]

Answer:

<h3>The Option B) Multiple regression is correct</h3><h3>Regression analysis involving one dependent variable and more than one independent variable is known as <u>multiple regression.</u></h3>

Step-by-step explanation:

Given that  regression analysis involving  one dependent variable and more than one independent variable

For : Regression analysis involving one dependent variable and more than one independent variable is known as <u>multiple regression</u>

  • In statistics, a linear regression is a linear relationship between a  dependent variable and one or more  independent variables.
  • In statistics for more than one independent variable and with one dependent variable in regression analysis , then the regression  is called as multiple regression.
  • Therefore Option B) Multiple regression is correct
<h3>Regression analysis involving  one dependent variable and more than one independent variable is known as <u>multiple  regression</u>.</h3>
7 0
3 years ago
Find the GCF of 6x+4 and divide
ella [17]
The GCF is 2
Merry Christmas
4 0
3 years ago
Other questions:
  • Simplify.<br><br> x + (7 + 14x)
    14·2 answers
  • Which story problems could be solved using the given equation? Choose exactly two answers that are correct. A. Lucas needs a woo
    7·1 answer
  • How do you determine an angle’s measurement in degrees?
    9·1 answer
  • 2/6 + _ =1 explain how you can find the unknown addend
    13·2 answers
  • Is ab perpendicular to cd A(0,2) B(-3,-3) C(-4,1)D(0,-2)
    14·1 answer
  • Please help for 20 points
    5·2 answers
  • A paint company claims their paint will be completely dry within 45 minutes after application. Recently, customers have complain
    10·1 answer
  • Please answer and help me on this question!​
    9·1 answer
  • HELPP HELPPP PLEASEEE
    6·1 answer
  • This morning, Sarah's team started at zero and earned 5 points for perfect attendance. The team lost 10 points for disruptive be
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!