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
Kazeer [188]
3 years ago
14

I need help with answer number 3. Help me please

Mathematics
1 answer:
posledela3 years ago
4 0
Do (6x12)/2, that should work
You might be interested in
For every 1 girl in Mr Hegarty's class there are 2 boys. What is the ratio of boys to girls in the class?
ivolga24 [154]
2:1 is the ratio for boys to girls
7 0
3 years ago
Pleas help me Solve- 8/0.5 ​
klasskru [66]

Answer:

The answer to the question is -16.

6 0
3 years ago
Read 2 more answers
(HELP I BEG YOU I NEED SLEEP ITS EASY MULTIPLE CHOICE)
ivann1987 [24]

Answer:the answer will be 6

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Sunspots have been observed for many centuries. Records of sunspots from ancient Persian and Chinese astronomers go back thousan
Lunna [17]

Answer:

(a) Null Hypothesis, H_0 : \mu \leq 41  

    Alternate Hypothesis, H_A : \mu > 41

(b) The value of z test statistics is 1.08.

(c) We conclude that the mean sunspot activity during the Spanish colonial period was lesser than or equal to 41.

Step-by-step explanation:

We are given that in a random sample of 40 such periods from Spanish colonial times, the sample mean is x¯ = 47.0. Previous studies of sunspot activity during this period indicate that σ = 35.

It is thought that for thousands of years, the mean number of sunspots per 4-week period was about µ = 41.

Let \mu = <u><em>mean sunspot activity during the Spanish colonial period.</em></u>

(a) Null Hypothesis, H_0 : \mu \leq 41     {means that the mean sunspot activity during the Spanish colonial period was lesser than or equal to 41}

Alternate Hypothesis, H_A : \mu > 41     {means that the mean sunspot activity during the Spanish colonial period was higher than 41}

The test statistics that would be used here <u>One-sample z test statistics</u> as we know about the population standard deviation;

                            T.S. =  \frac{\bar X-\mu}{\frac{\sigma}{\sqrt{n} } }  ~ N(0,1)

where, \bar X = sample mean = 47

            σ = population standard deviation = 35

            n = sample of periods from Spanish colonial times = 40

So, <em><u>the test statistics</u></em>  =  \frac{47-41}{\frac{35}{\sqrt{40} } }

                                      =  1.08

(b) The value of z test statistics is 1.08.

(c) <u>Now, the P-value of the test statistics is given by;</u>

                P-value = P(Z > 1.08) = 1 - P(Z < 1.08)

                              = 1 - 0.8599 = <u>0.1401</u>

Since, the P-value of the test statistics is higher than the level of significance as 0.1401 > 0.05, so we have insufficient evidence to reject our null hypothesis as it will not fall in the rejection region due to which <u>we fail to reject our null hypothesis</u>.

Therefore, we conclude that the mean sunspot activity during the Spanish colonial period was lesser than or equal to 41.

8 0
3 years ago
What Is the percent chance that a person was a male given that they lived
alex41 [277]

Answer:

23.3%

Step-by-step explanation:

this is the estimated life expectancy of a male person to live to one hundred

4 0
3 years ago
Other questions:
  • One third of a birds eggs hatched. If 2 eggs hatched, how many eggs did the bird lay?
    7·2 answers
  • Graph the line y = -5/4x-3
    12·1 answer
  • 7 An outfielder throws a baseball toward the infield at an angle of 25 degrees to the horizontal. The initial velocity of the th
    13·1 answer
  • Simplify 3^-9/ 3^-12 a.1/3^3 b.1/3^21 c.3^3 d.3*21
    11·2 answers
  • Which counterexample proves this statement is FALSE?
    6·1 answer
  • Tim's phone service charges $24.78 plus an additional $0.24 for each text message sent per month. If Tim's phone bill was $30.78
    11·1 answer
  • 24.065.127<br> write each numeral in words
    5·1 answer
  • I need the answer for this: 7y+4/y+2=4/3
    8·1 answer
  • What is the value of the expression 9 + ( fraction 1 over 2 )4 ⋅ 48? (1 point)
    10·1 answer
  • *IN YOUR OWN WORDS* <br>Summarize the constant of proportionality.<br><br>​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!