Discrete or Continuous? II Identify the following as discrete or continuous random variables: a.Number of overdue accounts in a department store at a particular time b.Your blood pressure

A population of values has a normal distribution with ${\displaystyle \mu =133.5}$ and ${\displaystyle \sigma =5.2}$. You intend to draw a random sample of size ${\displaystyle n=230}$.
Find the probability that a single randomly selected value is between 133.6 and 134.1.
${\displaystyle P\left(133.6<X<134.1\right)=}$?
Write your answers as numbers accurate to 4 decimal places.

We wish to estimate what percent of adult residents in a certain county are parents. Out of 600 adult residents sampled, 192 had kids. Based on this, plot a $99\mathrm{\%}$ confidence interval for the proportion of adult residents who are parents in a given county.
Express your answer in the form of three inequalities. Give your answers in decimal fractions up to three places ${\displaystyle <p<}$ Express the same answer using a point estimate and a margin of error. Give your answers as decimals, to three places.
${\displaystyle p=\pm }$

The joint density of the random variables X and Y is given by
$f(x,y)=\{\begin{array}{ll}8xy& 0\le x\le 1,0\le y\le x\\ 0& otherwise\end{array}$
Find the marginal density of Y

Presenting data in the form of table. For the data set shown by the table, Solve,
a) Create a scatter plot for the data.
b) Use the scatter plot to determine whether an exponential function, a logarithmic function, or a linear function is the best choice for modeling the data. (If applicable, you will use your graphing utility to obtain these functions.)
$\begin{array}{|cc|}\hline \text{Intensity (wattd per}mete{r}^2)& \text{Loudness Level (decibels)}\\ 0.1\text{(loud thunder)}& 110\\ 1\text{(rock concert, 2 yd from speakers)}& 120\\ 10\text{(jackhammer)}& 130\\ 100\text{(jet take off, 40 yd away)}& 140\\ \hline\end{array}$

Explain what chi squared goodness of fit is. What is the underlying assumption? What is the test statistic and what is its asymptotic distribution? How the hypothesis is formulated and what are the expected outcomes? What is the criterion for rejecting the null hypothesis? How is the p value evaluated? Provide a hypothetical formulation of goodness of fit test.

How do you find the mode of 20, 45, 46, 45, 49, 45, 49?

Describe how you can use a two -way table to organize data you collect from a survey.