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
balandron [24]
2 years ago
7

Test: PRACTICE EXAM #1

Mathematics
1 answer:
Gnesinka [82]2 years ago
4 0

John should receive about 7200 milligrams of the drug.The unit conversion given is,1 lb =0.45 kg.

<h3>What is weight?</h3>

The weight of matter is found as the product of the mass and the gravitational acceleration.

Unit conversion;

1 lb =0.45 kg.

Dosage of a drug =  200 mg / kilogram

John weighs  = 80 lb

1 lb =0.45 kg.

80 lb = 36 kg

According to the weight the drug should he receive is;

Dosage of a drug =  200 mg / kilogram  × 36

Dosage of a drug = 7200 milli gram

Hence, John should receive about 7200 milligrams of the drug.

To learn more about the weight refer;

brainly.com/question/10069252

#SPJ1

You might be interested in
What is the answer of cscx/secx
jonny [76]
As you know 
csc x = 1/sin x
sec x =1/cos x 
so, (1/sin x) / (1/cos) = 1/sin x * cos x =
cos x / sin x = cot x

4 0
3 years ago
Which shape is similar to shape 1
ki77a [65]
Can you please insert a photo so I can help you
5 0
3 years ago
Read 2 more answers
Find the distance between the two points.<br> 8. (-1,0), (-8, 4)
Yuki888 [10]

Answer:

65

Step-by-step explanation:

7 0
3 years ago
Find the value of the ratio x ÷ y if the equation is 5x²-13xy+8y²​
Maslowich

Answer:

x÷y=8/5 or 1÷1

Step-by-step explanation:

Please mark as brainliest

5 0
3 years ago
Suppose we are testing people to see if the rate of use of seat belts has changed from a previous value of 88%. Suppose that in
Andreas93 [3]

Answer:

a) We would expect to see 500*0.88=440

b) z=\frac{0.9 -0.88}{\sqrt{\frac{0.88(1-0.88)}{500}}}=1.376  

p_v =2*P(Z>1.376)=0.167  

So the p value obtained was a very high value and using the significance level assumed \alpha=0.05 we have p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the true proportion is not significant different from 0.9.

The p value is a criterion to decide if we reject or not the null hypothesis, when p_v we reject the null hypothesis in other case we FAIL to reject the null hypothesis. And represent the "probability of obtaining the observed results of a test, assuming that the null hypothesis is correct".  

Step-by-step explanation:

Data given and notation

n=500 represent the random sample taken

X=450 represent the people that have the seat belt fastened

\hat p=\frac{450}{500}=0.9 estimated proportion of people that have the seat belt fastened

p_o=0.88 is the value that we want to test

\alpha represent the significance level

z would represent the statistic (variable of interest)

p_v{/tex} represent the p value (variable of interest)  Part aWe would expect to see 500*0.88=440Part bConcepts and formulas to use  We need to conduct a hypothesis in order to test the claim that the true proportion changes fro m 0.88.:  Null hypothesis:[tex]p=0.88  

Alternative hypothesis:p \neq 0.88  

When we conduct a proportion test we need to use the z statisitc, and the is given by:  

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

The One-Sample Proportion Test is used to assess whether a population proportion \hat p is significantly different from a hypothesized value p_o.

Calculate the statistic  

Since we have all the info requires we can replace in formula (1) like this:  

z=\frac{0.9 -0.88}{\sqrt{\frac{0.88(1-0.88)}{500}}}=1.376  

Statistical decision  

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.  

The significance level assumed is \alpha=0.05. The next step would be calculate the p value for this test.  

Since is a bilateral test the p value would be:  

p_v =2*P(Z>1.376)=0.167  

So the p value obtained was a very high value and using the significance level assumed \alpha=0.05 we have p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the true proportion is not significant different from 0.9.

The p value is a criterion to decide if we reject or not the null hypothesis, when p_v we reject the null hypothesis in other case we FAIL to reject the null hypothesis. And represent the "probability of obtaining the observed results of a test, assuming that the null hypothesis is correct".  

8 0
3 years ago
Other questions:
  • A rectangular parking lot has an area of 682 square yards.The lot is 22 yards wide.What is the length of the parking lot?
    15·1 answer
  • the length of a rectangular prism is 2/3 yards the width 5/6 yard the height 4/5 yard what is the volume?
    15·1 answer
  • NEED ANSWER FAST WILL GIVE BRAINLIEST what is −3.9 − 8.9
    8·1 answer
  • A jet flies at an altitude of 52, 800 feet what is the height of the jet in miles
    14·1 answer
  • How to do an equation like this step by step? 4.5 (8 - x) + 36 = 100 - 2.5 (3x + 24)
    9·1 answer
  • In your sock drawer you have 6 blue, 7 gray, and 2 black socks. Half asleep one morning you grab 2 socks at random and put them
    14·1 answer
  • The explicit rule for an arithmetic sequence is an=20/3+1/3(n-1). What is the value of the 89th term?
    11·1 answer
  • A person standing on a second floor balcony drops keys to a friend standing below the balcony. The keys are dropped from a heigh
    8·1 answer
  • What is the value of 8.3 X 10 ? A. eight hundred thousand, thirty B. eighty-three thousand C. eight thousand, three hundred D. e
    8·2 answers
  • This recipe makes four portions of soup.
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!