A market research firm tests whether the proportion of onlin…

A market research firm tests whether the proportion of online shoppers who prefer subscription-based purchasing models differs from 50% (H0:p=0.50, H1:p≠0.50). A random sample of n=1,000 online consumers finds that 650 prefer subscription models (p^=0.65). Using a two-tailed proportion z-test at α=0.05, the Stats Kingdom calculator returns a test statistic of z=9.4868, critical values of ±1.9600, and a p-value of 0.0000. Which of the following correctly states both the comparison that leads to the statistical decision AND the conclusion that properly follows from it?

A financial analyst at a fintech company runs a two-tailed o…

A financial analyst at a fintech company runs a two-tailed one-sample proportion z-test to determine whether the company’s loan approval rate differs from the industry standard of 60%. The test returns a test statistic of z=2.15, a p-value of 0.032, and was pre-specified at a significance level of α=0.05. The analyst presents the following five statements. Select all that are TRUE.

A field ecologist is studying a population of ferns whose fr…

A field ecologist is studying a population of ferns whose frond lengths follow a normal distribution with mean μ=38 cm and standard deviation σ=6 cm. The ecologist wants to use the Stats Kingdom Normal Distribution Calculator to find the probability that a randomly selected fern has a frond length strictly between 32 cm and 47 cm. Arrange the following steps in the correct order to complete this probability calculation.

In 2001, Argentina experienced a financial crisis.  In respo…

In 2001, Argentina experienced a financial crisis.  In response, the Argentine government froze access to bank accounts for a year. Argentineans had no access to their money.​Many banks subsequently went under, costing Argentine citizens their bank-based savings. The event was not a complete surprise. The Argentine government had a history of freezing bank accounts, such as during financial crises in 1982 and 1989.​What affect, if any, do you think these freezes will have on the ability of Argentine banks to perform their financial intermediation functions in the future? Be sure to explain your answer.

In 2010, the U.S. government was running a large deficit. So…

In 2010, the U.S. government was running a large deficit. Some were concerned that pressure might be put on the Federal Reserve to purchase government bonds to help the government finance this deficit. If the Fed were to buy government bonds to help the government finance its expenditures, then the price level would

While driving on the highway, a truck in front of you kicks…

While driving on the highway, a truck in front of you kicks up a stone that shatters your windshield, forcing you to replace it. A friend says, “At least it’s good for the economy—the windshield shop will earn money, and their employees will benefit. The net effect is a better overall economy.”  Using the Economic Way of Thinking, evaluate your friend’s claim that the broken windshield benefits the economy overall.  Be sure to explain your reasoning.