Category: Uncategorized

Match each of the following compounds (note all the number in the formula are subscripts) to their molecular shape name. (hint: draw the Lewis dot structure for each)

Determine the formula mass for Copper (VI) sulfide an imaginary compound. (Enter your answer with 4  sig figs and no units).  

Construct the appropriate confidence interval. [8 Points Each] 14) Construct the indicated confidence interval for the population mean

Find the minimum sample size. [6 Points] 18) A researcher wishes to estimate the number of households with two cars. How large a sample is needed in order to be 95 % confident that the sample proportion will not differ from the true proportion by more than 5 %? A previous study indicates that the proportion of households with two cars is 22%.

Explain. [2 Points] 8) Given the same sample statistics, which level of confidence will produce the narrowest confidence interval: 75%, 85%, 90%, or 95%? Explain your reasoning.

Use the Central Limit Theorem to find the mean and standard error of the mean of the indicated sampling distribution. [4 Points] 3) The amounts of time employees of a telecommunications company have worked for the company are normally distributed with a mean of 5.4 years and a standard deviation of 2.1 years. Random samples of size 12 are drawn from the population and the mean of each sample is determined.

Provide the continuity correction. [2 Points] 6) Ten percent of the population is left-handed. A class of 5350 students is selected. Convert the binomial probability P(x ≤ 22) to a normal probability by using the correction for continuity.

Determine the formula mass for Tin (III) oxide an imaginary compound. (Enter your answer with 4  sig figs and no units).

What’s the name of the equipment shown below?  

Calculate. [5 Points] 9) Find the margin of error for the given values of c, σ, and n. c = 0.90 , σ = 11.5 , n = 120