The data set “lbw” contains information about the variable birth weight, labeled by the letter x which is measured in grams. The following is the boxplot in R. 25% of the babies weigh less than

A zoologist collected wild lizards in the Southwestern United States. Thirty lizards from the genus Phrynosoma were placed on a treadmill and their speed measured. The recorded speeds (meters/second) (the fastest time to run a half meter) for thirty lizards are summarized in the relative histogram below. About how many lizards had recorded speeds above 1 meters/second? (Fill in the numerical value).

About the standard deviation, (Select the correct option).  

Assume that the average price of a new house is $150,000, the standard deviation of prices is $10,000, and the variable price of a new house is normally distributed. If a new house is randomly selected, we can say:  (Select the correct option).  

  About the Bernoulli distribution we can say: (Select the correct option)

Five students took an exam. Their times to complete the exam (in minutes) are below:  30, 45, 67, 36, 40  The population standard deviation of this data set is:    (Report a numerical value. Round your answer to two decimal places)

Suppose we create a box model for the outcome of a game of darts. The player has a 1/4 chance of throwing a dart in the inner ring, and a 3/4 chance of the dart landing in the outer ring. In our model, we have two unique tickets marked “inner” and “outer”. We put in 3 tickets marked “outer”. How many tickets do we put in that are marked “inner”? (Report a numerical value)

Suppose packages of margarine coming from an automated processor have weights that are normally distributed. For one day’s production, the weights are well approximated by a normal curve with mean 8.5 oz and a standard deviation of 0.5. Suppose two packages are selected at random from the day’s production. If the packages of margarine are labeled 8 oz, what is the probability that both of them weigh above the labeled amount? (Assume their weights are independent).   (Fill in the numerical value. Round your answer to two decimal places)

On a given morning, Squidward has a forty percent chance of practicing his clarinet, and a fifty percent chance of taking a long, hot bath. The two events are mutually exclusive.  (Report a numerical value) The chance of him practicing his clarinet and taking a bath is .   

The stem and leaf plot below shows the running times in a 400 m run for a random sample of 19 runners. 6|0 represents 60 seconds.  (Select the correct option)