Recent questions in College Statistics

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Monique Henson 2023-04-01

The product of the ages, in years, of three (3) teenagers os 4590. None of the have the sane age. What are the ages of the teenagers???

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Paloma Houston 2023-04-01

Use the row of numbers shown below to generate 12 random numbers between 01 and 99

78038 18022 84755 23146 12720 70910 49732 79606

Starting at the beginning of the row, what are the first 12 numbers between 01 and 99 in the sample?

78038 18022 84755 23146 12720 70910 49732 79606

Starting at the beginning of the row, what are the first 12 numbers between 01 and 99 in the sample?

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ofraun4ys5 2023-03-31

How many different 10 letter words (real or imaginary) can be formed from the following letters

H,T,G,B,X,X,T,L,N,J.

H,T,G,B,X,X,T,L,N,J.

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Lacey Cordova 2023-03-25

Is every straight line the graph of a function?

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Marisa Singleton 2023-03-24

For the 1s orbital of the Hydrogen atom, the radial wave function is given as: $R(r)=\frac{1}{\sqrt{\pi}}(\frac{1}{{a}_{O}}{)}^{\frac{3}{2}}{e}^{\frac{-r}{{a}_{O}}}$ (Where ${a}_{O}=0.529$ ∘A)

The ratio of radial probability density of finding an electron at $r={a}_{O}$ to the radial probability density of finding an electron at the nucleus is given as ($x.{e}^{-y}$). Calculate the value of (x+y).

The ratio of radial probability density of finding an electron at $r={a}_{O}$ to the radial probability density of finding an electron at the nucleus is given as ($x.{e}^{-y}$). Calculate the value of (x+y).

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juanikitoexgv5y 2023-03-19

Find the sets $A$ and $B$ if $\frac{A}{B}=\left(1,5,7,8\right),\frac{B}{A}=\left(2,10\right)$ and $A\cap B=\left(3,6,9\right)$. Are they unique?

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kreiranihqlz 2023-03-13

What are the characteristics of a good hypothesis?

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zatynlpv 2023-03-12

If x is 60% of y, find $\frac{x}{y-x}$.

A)$\frac{1}{2}$

B)$\frac{3}{2}$

C)$\frac{7}{2}$

D)$\frac{5}{2}$

A)$\frac{1}{2}$

B)$\frac{3}{2}$

C)$\frac{7}{2}$

D)$\frac{5}{2}$

College StatisticsAnswered question

Jaelyn Kennedy 2023-03-11

The numbers of significant figures in $9.1\times {10}^{-31}kg$ are:

A)Two

B)Three

C)Ten

D)Thirty one

A)Two

B)Three

C)Ten

D)Thirty one

College StatisticsAnswered question

freimerf2 2023-03-01

What is the five-step process for hypothesis testing?

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mayonaisea2ef 2023-02-21

How to calculate Type 1 error and Type 2 error probabilities?

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Jaylee David 2023-02-02

How long will it take to drive 450 km if you are driving at a speed of 50 km per hour?

1) 9 Hours

2) 3.5 Hours

3) 6 Hours

4) 12.5 Hours

1) 9 Hours

2) 3.5 Hours

3) 6 Hours

4) 12.5 Hours

College StatisticsOpen question

villain hero2023-01-11

A student is asked to pick marbles from a bag that contains 18 marbles. 8 marbles are red, 4 are green, and 6 are black. What is the minimum number of marbles that a blindfolded student would have to draw from the bag to be certain of having at least three marbles of red color?

College StatisticsAnswered question

Linda Norman 2023-01-09

Who discovered and first used the constant $h=6.6\times {10}^{-34}$ J.s?

1) Bohr

2) Einstein

3) De Broglie

4) Planck

1) Bohr

2) Einstein

3) De Broglie

4) Planck

College StatisticsAnswered question

Kaitlin Jacobson 2022-12-19

How to evaluate the following sum?

$\frac{100}{100}\cdot 1+\frac{100\cdot 99}{{100}^{2}}\cdot 2+\frac{100\cdot 99\cdot 98}{{100}^{3}}\cdot 3+\frac{100\cdot 99\cdot 98\cdot 97}{{100}^{4}}\cdot 4+\dots +\frac{100\cdot 99\cdot 98\cdot \dots \cdot 1}{{100}^{100}}$

What I have tried:

Above sum can be written as $S=\sum _{i=1}^{100}\frac{100\cdot 99\cdot ...\cdot (100-i+1)}{{100}^{i}}\cdot i$

$=\sum _{i=1}^{100}\frac{{}^{100}{P}_{i}}{{100}^{i}}\cdot i$

$\frac{100}{100}\cdot 1+\frac{100\cdot 99}{{100}^{2}}\cdot 2+\frac{100\cdot 99\cdot 98}{{100}^{3}}\cdot 3+\frac{100\cdot 99\cdot 98\cdot 97}{{100}^{4}}\cdot 4+\dots +\frac{100\cdot 99\cdot 98\cdot \dots \cdot 1}{{100}^{100}}$

What I have tried:

Above sum can be written as $S=\sum _{i=1}^{100}\frac{100\cdot 99\cdot ...\cdot (100-i+1)}{{100}^{i}}\cdot i$

$=\sum _{i=1}^{100}\frac{{}^{100}{P}_{i}}{{100}^{i}}\cdot i$

College StatisticsAnswered question

sestigtalill 2022-12-19

Geometric distribution. Johnny has 1,176 Pok´emon cards in total. Pok´emon EX is a special type of card, and Johhny has 39 EX-type cards. He is looking for an EX-type card, but all of the cards are completely mixed up and stored in a shoe box. His mother is calling him for dinner. What is the probability that Johnny will have to look through no more than 25 cards before he finds an EX-type card?

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