Assume That You Plan to Use a Significance Level Of \alpha

question 81

Multiple Choice

Assume that you plan to use a significance level of $\alpha = 0.05$ test the claim that p $\mathrm { p } _ { 1 } = \mathrm { p } _ { 2 }$ . Use the given sample sizes and
numbers of successes to find the z test statistic for the hypothesis test.
-A random sampling of sixty pitchers from the National League and fifty-two pitchers from the American League showed that 19 National and 8 American League pitchers had E.R.A's below 3.5.

• A) z = 272.163
• B) z = 2.009
• C) z = 2.612
• D) z = 22.404

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Definitions:

Short 100 Shares

The selling of 100 shares that are not currently owned, with the expectation of buying them back at a lower price for a profit.

Initial Margin

The minimum amount of capital required to open a new position in the market, designed as a security for the broker against potential losses.

Actual Margin

The real profit margin achieved after accounting for all costs and expenses, reflecting the actual financial health and profitability.

Initial Margin

The minimum amount of capital required to be deposited in a margin account before trading on margin or selling short.