F(x)=4x^3+Ax^2+8x-1 and f(2)=1

A letter to Europe from the United States cost $.94 to mail. A letter mailed within the United States cost $.44. Nancy mailed fi

frosja888 [35]

Answer:

3

Step-by-step explanation: i used my calculator

7 0

3 years ago

What is the roman numeral CCLIII in standard form

mylen [45]

Answer:

It's 253

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

An experiment was conducted to compare the wearing qualities of three types of paint (A, B, and C) when subjected to the abrasiv

MaRussiya [10]

Answer:

A) H0: mean of A= mean of B= mean of C

H1: all means are unequal

B) 3.48194

C) 0.04515

D) H0 is accepted. There is significant difference among mean hours after which visibile abrasion is observed for each type of paint

Step-by-step explanation:

A) Here Anova test will be used as we are comparing three groups

B) mean of A= 229.6, SD of A= 158.1962, SE of A= 50.026

mean of B= 309.9 , SD of B= 147.8742, SE of B= 46.7619

mean of C= 427.8, SD of C= 196.8179, SE of C= 62.2393

overall mean= 322.43

degrees of freedom between groups= 3-1=2

degrees of freeddom of error= total number of observations - number of groups= 30-3= 27

total degrees of freedom= total number of samples-1= 30-1 =29

Sum of squares between groups=∑ sample size of group×(individual group mean- over all mean)²

=198772.4667

mean of sum of squares between groups= sum of squares between groups/ (number of groups -1)

= 198772.4667/2

sum of squares of error=∑∑ (individual observation of group- group mean)²

= 770670.9223

mean sum of squares of erros= sum of squares of error/(total number of samples-number of groups)

= 770670.92/27

= 28543.38

F- stat= mean sum of squares between groups/ mean sum of squares of error

F stat= 3.48194

C) p- value= 0.04515

D) since F-stat is greater than p- value, null hypothesis is rejected

from F distribution table

F(2,27)=

3 0

3 years ago

What is the difference between the mean and the median of the data set?

Pepsi [2]

As you probably know there is a difference between mean and median -- the mean acts as a measure of the average, and on the other hand median measures the middle number. The median in this is 15 and the mean is also 15.

4 0

3 years ago

Shawna invests $5,048 in a savings account with a fixed annual interest rate of 4% compounded 12 times per year. How long will i

Elena-2011 [213]

Answer:

5 years

Step-by-step explanation:

In the question we are given;

Amount invested or principal amount as $5048
Rate of interest as 4% compounded 12 times per year
Amount accrued as $6,163.59

We are required to determine the time taken for the money invested to accrue to the given amount;

Using compound interest formula;

$A=P(1+\frac{r}{100})^n$

where n is the interest period and r is the rate of interest, in this case, 4/12%(0.33%)

Therefore;

$6,163.59=5,048(1+\frac{0.333}{100})^n$

$1.221=(1+\frac{0.333}{100})^n$

$1.221=(1.0033)^n$

introducing logarithms on both sides;

$log1.221=log(1.0033)^n\\n=\frac{log1.221}{log1.0033} \\n=60.61$

But, 1 year = 12 interest periods

Therefore;

Number of years = 60.61 ÷ 12

= 5.0508

= 5 years

Therefore, it will take 5 years for the invested amount to accrue to $6163.59

3 0

4 years ago