When performing periodontal probing, how should the probe be oriented in relation to the tooth?  

Two tooth buds that grow together to form one larger tooth is referred to as

The daily calorie intake of adults has a population standard deviation of 500 calories. A random sample of 100 adults is selected. What is the standard deviation of the sampling distribution of the sample mean ?

If a two sided test of hypothesis is conducted at a 0.05 level of significance and the test statistic resulting from the analysis is z=0.92 . The conclusion is  :

In testing the claim p > 0.30, the p-value of the test was found to be 0.6950. What is the value of the test statistic? Assume a large sample size. (Round to two decimal places.)

A researcher wants to estimate the passing rate of Stats courses at FIU with a margin of error of 3 % and a confidence level of 90 % . If the passing rate is believed to be around 70 % , what sample size is needed ? ( Use z=1.645)

The ABC Light Bulb Company claims that their light bulbs have an average lifespan of 900 hours, with a standard deviation of 100 hours. If the quality control team randomly selects 70 light bulbs for analysis , what is the probability that the average lifespan for the sample will exceed 920 hours? ( Round to two decimal places) 

The weights of packages shipped by a company have a population mean of 40 pounds and a population standard deviation of 12 pounds. The distribution of individual package weights is strongly right-skewed. A random sample of 64 packages is selected.  What is the probability that the sample mean weight is less than 37 pounds? ( round to three decimal places)

An educational researcher claims that the mean GPA for Psychology students at a certain college is less than 3.2 . A sample of 49 Psychology students gave a mean GPA of 3.1 with a standard deviation 0.35 . What is the value of the test statistic used to test the claim ? ( Do not round)

A survey claims that 9 out of 10 doctors (i.e., 90%) recommend brand Z for their patients who have children. To test this claim against the alternative that the actual proportion of doctors who recommend brand Z is less than 90%, a random sample of 100 doctors results in 83 who indicate that they recommend brand Z. The test statistic in this problem is approximately (round to the nearest hundredth)