All categories

2 years ago

I need help please help me !!!!

Mathematics

1 answer:

natita [175]2 years ago

8 0

Answer:

Step-by-step explanation:

hope this helps :)))))

You might be interested in

300000cm in meteres then in km

Vadim26 [7]

Answer:3

Step-by-step explanation:because from cm to km you have to divide by 100,000 to get km from cm so 300,000/100,000=3

3 0

3 years ago

Read 2 more answers

Describe all situation where vertical angles are also supplementary

Nataly_w [17]

Vertical angles are always the same size. if they are supplementary the measures must add to 180. 180/2=90. vertical angles are supplementary only when they are right angles, our 90°

3 0

4 years ago

Read 2 more answers

An item is regularly priced at $80 . It is on sale for 20% off the regular price. How much (in dollars) is discounted from the r

Mazyrski [523]

80 * .20=16

It is 16 dollars off the regular price

3 0

3 years ago

Un camio pot portar una carrega maxima de 5 t.En un afabrica ha caregat 6 contenidors de 3 q i 85kg cada un.Quants quilos mes hi

scoray [572]

Answer:

ripppppppppp

Step-by-step explanation:

ripppppppppppp

7 0

3 years ago

A study was conducted to measure the effectiveness of hypnotism in reducing pain. The measurements are centimeters on a pain sca

blondinia [14]

The confidence interval for mean of the "before-after" differences is $\fbox{(-0.4037,1.8037)}$

Further explanation:

Find the difference between the before pain and the after pain.

Difference = before-after

Kindly refer to the Table for the difference of between the before and after pain.

Sum of difference = $5.6$

Total number of observation = $8$

Mean of difference = $0.7$

Sample standard deviation $s$ = $1.3201$

Level of significance = $5\%$

Formula for confidence interval = $\left( \bar{X} \pm t_{n-1, \frac{\alpha}{2}\%} \frac{s}{\sqrt{n}} \right)$

confidence interval = $\left( 0.7 \pm t_{8-1, \frac{5}{2}\%} \frac{1.3201}{\sqrt{8}} \right)$

confidence interval = $\left( 0.7 \pm t_{7, \frac{5}{2}\%} \frac{1.3201}{\sqrt{8}} \right)$

From the t-table.

The value of $t_{7, \frac{5}{2}\%$ = $2.365$

Confidence interval = $( 0.7 \pm 2.365}\times \frac{1.3201}{\sqrt{8}}) \right)$

Confidence interval = $\left( 0.7 - 2.365}\times \0.4667,0.7 + 2.365}\times \0.4667) \right$

Confidence interval = $(0.7-1.1037,0.7+1.1037)$

Confidence interval = $\fbox{(-0.4037,1.8037)}$

The $95\%$ confidence interval tells us about that $95\%$ chances of the true mean or population mean lies in the interval.

Yes, the hypnotism appear to be effective in reducing pain as confidence interval include includes the positive deviation from the mean.

Learn More:

1. Learn more about equation of circle brainly.com/question/1506955

2. Learn more about line segments brainly.com/question/909890

Answer Details:

Grade: College Statistics

Subject: Mathematics

Chapter: Confidence Interval

Keywords:

Probability, Statistics, Speed dating, Females rating, Confidence interval, t-test, Level of significance , Normal distribution, Central Limit Theorem, t-table, Population mean, Sample mean, Standard deviation, Symmetric, Variance.

7 0

3 years ago

Read 2 more answers