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3 years ago

9

A sample size of n=12 is a simple random sample selected from a normally distributed population. Find the critical value t* corr

esponding to a 95% confidence level (two-sided).

1 answer:

Ugo [173]3 years ago

5 0

Answer:

What are you asking then i can answer

Step-by-step explanation:

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Help me with this please!!

qaws [65]

Answer:

Yes; K= -2 and y=-2x

Step-by-step explanation:

1+2=3

3+2=5

8 0

3 years ago

James is 46 years old. This is uncle john's age divided by 2, plus 14 years. how old is uncle John?

Alla [95]

(46/2)+14 = 37

You basically answered the question yourself.

5 0

4 years ago

mayam bought potato chips to school she share 1/4 of her chips with friends and 1/8 of her chips with her teacher how many has s

nika2105 [10]

$\huge\underline\mathtt\colorbox{cyan}{3/8}$

$\huge\mathsf\colorbox{white}{}$

<h2>Step-by-step explanation :</h2>

Total shared part:

1/4 + 1/8

Taking LCM and adding:

2/8+1/8

Adding gives:

3/8

4 0

3 years ago

A 2-column table with 3 rows. Column 1 is labeled Number of Rows with entries 1, 3, 5. Column 2 is labeled Number of Seats with

aleksandr82 [10.1K]

Answer:

its

Step-by-step explanation:

look at the row and times it by 6x5= 30

4 0

3 years ago

1. Dorothy bought a teddy bear and sold it at a 20% profit to Kim. Kim bought a suit costing $100 and dressed the teddy bear up

makkiz [27]

1. Dorothy paid $200 for the teddy bear

2. y is more than x by $33\frac{1}{3}$ %

Step-by-step explanation:

1. The given is:

Dorothy bought a teddy bear and sold it at a 20% profit to Kim
Kim bought a suit costing $100 and dressed the teddy bear up in the suit
Kim then sold the teddy bear in the suit to Karen for $442
Kim made a profit of 30%

We need to find how much Dorothy paid for the teddy bear

Assume that Dorothy bought a teddy bear for $x

∵ Dorothy bought a teddy bear for $x

∵ She sold it at a profit 20% to Kim

By using the ratio method

→ Buying price : Profit : Selling price

→ 100% : 20% : 120% ⇒ (100% + 20%)

→ x : : ?

By using cross multiplication

∴ 100% × Selling price = x × 120%

- Divide both sides by 100%

∴ Selling price = 1.2x

∴ Dorothy sold the teddy bear for $1.2x to Kim

∵ Kim bought a suit costing $100 and dressed the teddy bear

up in the suit

∴ The cost of the teddy bear = 1.2x + 100

∵ Kim sold the teddy bear in the suit to Karen for $442

∵ Kim made a profit of 30%

By using the ratio method

→ Cost price : Profit : Selling price

→ 100% : 30% : 130% ⇒ (100% + 30%)

→ 1.2x + 100 : : 442

By using cross multiplication

∴ (1.2x + 100) × 130% = 100% × 422

- Divide both sides by 130%

∴ 1.2x + 100 = 340

- Subtract 100 from both sides

∴ 1.2x = 240

- Divide both sides by 1.2

∴ x = 200

∴ Dorothy bought the teddy bear for $200

Dorothy paid $200 for the teddy bear

2. The given is:

x is less than y by 25%
Then y is more than x by how many percent

Assume that y is 100%

∵ y = 100%

∵ x is less than y by 25%

∴ x = 100% - 25%

∴ x = 75%

- The percentage of increasing of y = $\frac{y-x}{x}$ × 100%

∵ The percentage of increasing of y = $\frac{100-75}{75}$ × 100%

∴ The percentage of increasing of y = $\frac{25}{75}$ × 100%

∴ The percentage of increasing of y = $\frac{1}{3}$ × 100%

∴ The percentage of increasing of y = $33\frac{1}{3}$ %

y is more than x by $33\frac{1}{3}$ %

Learn more:

You can learn more about the ratio in brainly.com/question/4713715

#LearnwithBrainly

6 0

3 years ago