Select the correct option from each drop-down menu.
sully manages a cafe that typically sells 240 cups of coffee per day for $2 each. sully knows that for each $0.25 increase in the price of coffee,
20 fewer cups of coffee will be sold. let x represent the number of $0.25 price increases and rx) represent the total revenue earned from coffee
sales.
sully wants to write an equation in the form that reveals the best potential earnings for the cafe in terms of revenue earned from coffee sales
each day
complete the following statement for this situation.
reveals that the
revenue earned by the cafe from coffee sales will be $
the function
after $0.25 price increases.
reset
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According to a research study, parents with young children slept 6.4 hours each night last year, on average. a random sample of 18 parents with young children was surveyed and the mean amount of time per night each parent slept was 6.8. this data has a sample standard deviation of 0.9. (assume that the scores are normally distributed.) researchers conduct a one-mean hypothesis at the 5% significance level, to test if the mean amount of time parents with young children sleep per night is greater than the mean amount of time last year. the null and alternative hypotheses are h0: μ=6.4 and ha: μ> 6.4, which is a right-tailed test. the test statistic is determined to be t0=1.89 using the partial t-table below, determine the critical value(s). if there is only one critical value, leave the second answer box blank.