Learn Decimals with Plainmath's In-Depth Explanations and Real-World Examples

A university found that of its students withdraw without completing the introductory statistics course. Assume that students registered for the course. a. Compute the probability that or fewer will withdraw (to 4 decimals). b. Compute the probability that exactly will withdraw (to 4 decimals). c. Compute the probability that more than will withdraw (to 4 decimals).

Suppose that 17% of people own dogs. If you pick two people at random, what is the probability that they both own a dog? Give your answer as a decimal (to at least 3 places) or fraction Is it correct answer 0.029?

Solve $2t-3(t+8)=-(1-4t)+10$ for t. Simplfy all fractions or round decimals to 2 places. Show all steps.

What is the level of precision for the solution to the addition problem below? Given: The numbers are 6.339m, 0.170m and 30.4m and the operation is addition.

Refer to right triangle ABC in which $C={90}^{\circ }.$ Solve each triangle.
$a=4.37,c=6.21$

To solve: ${\displaystyle x+3.9=4.2}$

Write seller As

How do you calculate the following retaining the correct number of significant figures ${\displaystyle 12.432\times 3=}$ and ${\displaystyle 208\times 62.1=}$

Find the solution of the equation rounded to two decimals. ${\displaystyle \frac{1.73x}{2.12+x}=1.51}$

Among 25- to 30-years-olds, $28\mathrm{\%}$ say they have operated heavy machinery while under the influence of alcohol Suppose three 25- to 30-years-olds are selected at random. Complete psrts (a) through (d) below:
a) What is the probability that all three have operated heavy machinery while under the influence of alcohol?
b) What is the probability that at least one has not haavy operated heavy machinery while under the influence of alcohol?
c) What is the probability that none of three have operated heavy machinery while under the influence of alcohol?
d) What is the probability that at least one has operated heavy machinery while under the influence of alcohol?

To solve: ${\displaystyle 70=y-22.81}$

Use a calculator to evaluate the expression. Round your answer to the nearest hundredth. arcsin ${\displaystyle \left(0.25\right)\approx ?}$ radians

For the given fraction and decimals we have to write its equivalent percent. Given fractions are ${\displaystyle a)\frac{3}{25}b)\frac{1}{5}c)\frac{2}{5}}$ And the decimals are, ${\displaystyle d)0.01,e)4.06,f)0.6}$ We have to find its equivalent percent.

Approximate each expression correct to 4 decimals. ${\displaystyle a)5^{\frac{3}{5}}b)-3^{\sqrt{6}}c)7^{-2.356}}$

factor in determining the usefulness of an examination as a measure of demonstrated ability is the amount of spread that occurs in the grades. If the spread or variation of examination scores is very small, it usually means that the examination was either too hard or too easy. However, if the variance of scores is moderately large, then there is a definite difference in scores between "better," "average," and "poorer" students. A group of attorneys in a Midwest state has been given the task of making up this year's bar examination for the state. The examination has 500 total possible points, and from the history of past examinations, it is known that a standard deviation of around 60 points is desirable. Of course, too large or too small a standard deviation is not good. The attorneys want to test their examination to see how good it is. A preliminary version of the examination (with slight modifications to protect the integrity of the real examination) is given to a random sample of 20 newly graduated law students. Their scores give a sample standard deviation of 70 points. Using a 0.01 level of significance, test the claim that the population standard deviation for the new examination is 60 against the claim that the population standard deviation is different from 60.
(a) What is the level of significance?
State the null and alternate hypotheses.
$H_0:\sigma =60$

$H_1:\sigma <60H_0:\sigma >60$

$H_1:\sigma =60H_0:\sigma =60$

$H_1:\sigma >60H_0:\sigma =60$

$H_1:\sigma \ne 60$
(b) Find the value of the chi-square statistic for the sample. (Round your answer to two decimal places.)
What are the degrees of freedom?
What assumptions are you making about the original distribution?
We assume a binomial population distribution.We assume a exponential population distribution. We assume a normal population distribution.We assume a uniform population distribution.

Consider the given expression $2(\frac{17}{5})$

Convert decimals and fractions to percents Write seller Bs

Refer to right triangle ABC with $C={90}^{\circ }.$ Begin each problem by drawing a picture of the triangle with both the given and asked­for information labeled appropriately.
Also, write your answers for angles in decimal degrees.
If $a=42.3inchesandb=32.4$ inches, find B

In 2012, the worlds population was 7 billion and the population was projected to reach 8 billion by the year 2025. What was the annual growth rate projected? Round to four decimals.

A card is drawn randomly from a standard deck of 52 cards. Find the probability of the given event. any number between 4 and 7 inclusive