Fill in the blank with an appropriate word, phrase, or symbol(s). If a sample is drawn in such a way that each time an item is selected, each item in the population has an equal chance of being drawn, the sample is called a(n) _ sample

The art teacher bought $19$ sketchbooks for $\$2.98$ per book. What equation can be used to find the total cost of the sketchbooks?

A. $c = 19 \cdot \$ 2.98$

B. $\frac { 19 } { \$ 2.98 } = c$

C. $\$ 2.98 \cdot c = 19$

D. $\frac { \$ 2.98 } { 19 } = c$

Explain the meaning of a. a representative sample. b. probability sampling. c. simple random sampling.

Fill in the blank with an appropriate word, phrase, or symbol(s). A sample that consists of a random selection of groups or units is called a(n) _ sample.

Fill in the blank with an appropriate word, phrase, or symbol(s). When a sample is obtained by drawing every nth item, the sample is called a(n) _ sample.

A sample for which each member of a population has an equal chance of being selected is a(n) _______ sample.

If two events, A and B, are such that

$$P ( A ) = .5 , P ( B ) = .3 , \text { and } P ( A \cap B ) = .1$$

, find the following:

$$P ( A \cap B | A \cup B )$$

Fill in the blank with an appropriate word, phrase, or symbol(s). Experiments done with replacement will result in _ events.

A simple random sample of size n is drawn from a population that is known to be normally distributed. The sample mean, $\bar{x}$, is determined to be 104.3 and the sample standard deviation, s, is determined to be 15.9.

Construct the 90% confidence interval for the population mean if the sample size, n, is 15.

Fill in the blank with an appropriate word, phrase, or symbol(s). The collection, organization, and analysis of data is called _ statistics.

Express each probability as a fraction reduced to lowest terms, a die is rolled. The set of equally likely outcomes is {1, 2, 3, 4, 5, 6}. Find the probability of rolling. a number greater than 4.

Fill in the blank with an appropriate word, phrase, or symbol(s). All items or people or interest in an experiment are collectively called a(n) _.

Identify the sample and the population for each situation. Then describe the sample statistic and the population parameter.

A civic engineer randomly selects 10 city intersections with traffic lights. The mean length of a red light is calculated for the sample

Miguel is answering an e-mail from his friend Jorge. Answer Jorge's questions, saying that the people will have already done these things by the time indicated. Use the future perfect.

1. ¿Encontrarás un trabajo cuando te gradúes?
2. ¿Le comprarás un regalo a Maru cuando te paguen?
3. ¿Escribirá el Sr. Díaz una novela cuando se jubile?
4. ¿Harás los preparativos para ir a España cuando termine el año escolar (school year)?
5. ¿Llenará David la solicitud cuando llegue a la entrevista?
6. ¿Olvidaré a mi ex novia cuando me vaya de vacaciones?