Assume that z scores are normally distributed with a mean of 0 and a standard deviation of 1. If P(-b<z<b)=0.8664, find b.

Polar bodies are formed during the process of
a. spermatogenesis.
b. gametophyte formation.
c. sporophyte formation.
d. oogenesis.
e. None of these are correct.

Evaluate the expression when x = 7.1 and y = -2.5. 5.3 - (y - x)

Find a power series solution of the given differential equation. Determine the radius of convergence of the resulting series, and identify the series solution in terms of familiar elementary functions.

$$( x - 2 ) y ^ { \prime } + y = 0$$

Solve. Round to the nearest cent.

$$\$74 + \$15$$

Write the repeating decimal $0.7575 \ldots$ as a fraction.

Express in simplest form without negative or zero exponents.

$$\left( \frac { r ^ { - 1 } } { s ^ { - 1 } } \right) ^ { - 1 }$$

Assume that the readings on the thermometers are normally distributed with a mean of $0^{\circ}$ and a standard deviation of $1.00^{\circ} \mathrm{C}$. A thermometer is randomly selected and tested. In each case, draw a sketch, and find the probability of each reading. (The given values are in Celsius degrees.) Between -1.80 and 2.08.

Assume that the readings on the thermometers are normally distributed with a mean of $0^{\circ}$ and a standard deviation of $1.00^{\circ} \mathrm{C}$. A thermometer is randomly selected and tested. In each case, draw a sketch, and find the probability of each reading. (The given values are in Celsius degrees.) Between -2.11 and 1.55.

Assume that the readings on the thermometers are normally distributed with a mean of $0^{\circ}$ and a standard deviation of $1.00^{\circ} \mathrm{C}$. A thermometer is randomly selected and tested. In each case, draw a sketch, and find the probability of each reading. (The given values are in Celsius degrees.) Greater than -1.96

Assume that the readings on the thermometers are normally distributed with a mean of $0^{\circ}$ and a standard deviation of $1.00^{\circ} \mathrm{C}$. A thermometer is randomly selected and tested. In each case, draw a sketch, and find the probability of each reading. (The given values are in Celsius degrees.) Greater than 1.96.

In a Gallup poll, 1025 randomly selected adults were surveyed and 29% of them said that they used the Internet for shopping at least a few times a year. Find a 99% confidence interval estimate of the percentage of adults who use the Internet for shopping.

Assume that the readings on the thermometers are normally distributed with a mean of $0^{\circ}$ and a standard deviation of $1.00^{\circ}$. Find the indicated probability, where z is the reading in degrees. P(z<-1.96 or z>1.96)

Assume that the readings on the thermometers are normally distributed with a mean of $0^{\circ}$ and a standard deviation of $1.00^{\circ} \mathrm{C}$. A thermometer is randomly selected and tested. In each case, draw a sketch, and find the probability of each reading. (The given values are in Celsius degrees.) Greater than 1.25.