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4 years ago

11

Plz help I’m confused can someone help with one ,three and 4 oh and 2 I’ll give you 22 points plz help fast thank you plz plz ex

plain for 1 plz

1 answer:

noname [10]4 years ago

8 0

1. 783*23=18009, so it is 18009miles^2

2. Triangle

3. B is your variable

4. -60

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H(x) = -x^3-2x^2-3x+4; x=2

ioda

Answer:

h(2)=-18

Step-by-step explanation:

$h(x)=-x^3-2x^2-3x+4\\Substituting\ x=2,\\h(2)=-(2)^3-2(2)^2-3(2)+4\\h(2)=-(8)-2*4-6+4\\h(2)=-8-8-6+4\\h(2)=-22+4\\h(2)=-18$

4 0

3 years ago

An experiment consists of spining the spinner once.What is the probability of landing on a 2 ?

asambeis [7]

The probability of the spinner landing on 2 is

<em>1 / (the total number of different places it COULD land on) .</em>

5 0

3 years ago

A professor wants to estimate how many hours per week students study. A simple random sample of 78 students had a mean of 15.0 h

OleMash [197]

Answer:

interval=(15.085,14.9515)

Step-by-step explanation:

Table:

CI Z

85% 1.440

90% 1.645

95% 1.960

In order to find the interval/estimate of hours per week students study we consider the formula given below:

Interval=X± $\frac{Z*S}{\sqrt{n} }$

where:

X is the mean hours

Z is the value from Z distribution table of Confidence Interval

n is the sample size of students

S is the standard deviation

X=15, Z=1.645, S=2.3hours, n=78

Interval=15± $1.645*2.3/\sqrt{78}$

Interval=15±0.0485

interval=(15.085,14.9515)

7 0

3 years ago

Everytime u answer my question correct i will mark u brainlist

OleMash [197]

Answer:

Step-by-step explanation:

15c less than or equal to 200

4 0

4 years ago

Read 2 more answers

To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assig

Flauer [41]

Answer:

H0 : //μA = μB = μC

Step-by-step explanation:

Given the data:

Treatment | Observation

A | 20 | 30 | 25 | 33

B | 22 | 26 | 20 | 28

C | 40 | 30 | 28 | 22

To test whether there is a difference between the group means of a sample ; the ANOVA test is employed ;

The appropriate hypothesis test:

The alternative hypothesis will habour the notion that there is a difference in sample means while the alternative will be opposite, that is, no difference exists in the sample means for the three treatments :

Null hypothesis ; H0 : μA = μB = μC ;

The alternative hypothesis, takes the opposite of the null ;

H1 : μA ≠ μB ≠ μC (this means that the mean values of the treatments are not the same

The null hypothesis will

6 0

3 years ago