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3 years ago

On a local sports team 20% of 50 players are left-handed how many left-handed players are on the team

2 answers:

8 0

Answer: 10

Explanation: To answer this equation you need to multiply 50 by 20 which is equal to 1,000 and then divide it by 100 which equals 10

mr Goodwill [35]3 years ago

3 0

Answer:

10 players

Step-by-step explanation:

so a percentage is really just like a fraction or decimal so were going to turn it into a decimal by moving the decimal point two places to the left making it .20 then to figure out the answer we're going to multiply 50 by .20 to get 10

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US consumers are increasingly using debit cards as a substitute for cash and checks. From a sample of 100 consumers, the average

scoray [572]

Answer:

A. Margin of error = 128.79

B. The 99% confidence interval for the population mean is (7661.21, 7918.79).

Step-by-step explanation:

We have to calculate a 99% confidence interval for the mean.

The population standard deviation is know and is σ=500.

The sample mean is M=7790.

The sample size is N=100.

As σ is known, the standard error of the mean (σM) is calculated as:

$\sigma_M=\dfrac{\sigma}{\sqrt{N}}=\dfrac{500}{\sqrt{100}}=\dfrac{500}{10}=50$

The z-value for a 99% confidence interval is z=2.576.

The margin of error (MOE) can be calculated as:

$MOE=z\cdot \sigma_M=2.576 \cdot 50=128.79$

Then, the lower and upper bounds of the confidence interval are:

$LL=M-t \cdot s_M = 7790-128.79=7661.21\\\\UL=M+t \cdot s_M = 7790+128.79=7918.79$

The 99% confidence interval for the population mean is (7661.21, 7918.79).

8 0

3 years ago

Write 3 < x < 9 in interval notation.

lutik1710 [3]

Answer:

(3, 9)

Step-by-step explanation:

If we have ≤ or ≥, we use brackets to signify it includes the values.

If we have < or >, we use parenthesis to signify it doesn't include the values.

8 0

3 years ago

the total weight of 3 puppies is 2 pounds 4 ounces. how much does puppy weight in ounces. convert to ounces

brilliants [131]

Answer:

60 ounces

Step-by-step explanation:

there are 16 ounces in a pound plus the extra 4 ounces times 3 is 60 ounces in total

5 0

2 years ago

The sum of 5 consecutive numbers is 135

enot [183]

27+27+27+27+27 is 135

6 0

3 years ago

The colonists in Texas were fighting for

Zigmanuir [339]

Answer:

Texas Revolution, also called War of Texas Independence, War fought from October 1835 to April 1836 between Mexico and Texas colonists that resulted in Texas’s independence from Mexico and the founding of the Republic of Texas (1836–45). Although the Texas Revolution was bookended by the Battles of Gonzales and San Jacinto, armed conflict and political turmoil that pitted Texians (Anglo-American settlers of the Mexican state of Coahuila and Texas) and Tejanos (Texans of mixed Mexican and Indian descent) against the forces of the Mexican government had occurred intermittently since at least 1826.

Step-by-step explanation:

5 0

3 years ago

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