The table to the right classifies a stock's price change as up, down, or no change for both today's Price and yesterday's prices. Price changes were examined for 111 days. A financial theory states that Change the price change of today for a stock must be independent of yesterday's price change. Test the hypothesis that daily stock price changes for this stock are independent. Let a = 0.025. Price Change Previous Day Up No Change Down Today Up No Change 9 Down 11 18 15 6 16 13 14 Determine the null and alternative hypotheses for the test. Choose the correct answer below. O A. Ho: Today's price change and yesterday's price change are not independent. HA: Today's price change and yesterday's price change are independent. O B. Ho: Today's price change and yesterday's price change have equal proportions. HA: Today's price change and yesterday's price change have non-equal proportions. O C. Ho: Today's price change and yesterday's price change have non-equal proportions. HA: Today's price change and yesterday's price change have equal proportions. O D. Ho: Today's price change and yesterday's price change are independent. HA: Today's price change and yesterday's price change are not independent. Calculate the test statistic. x = (Round to four decimal places as needed.) Calculate the p-value. p-value = (Round to four decimal places as needed.) Determine a conclusion. Choose the correct answer below. O A. Reject Ho. There is insufficient evidence to conclude that today's price change and yesterday's price change are not independent. O B. Reject Ho. There is sufficient evidence to conclude that today's price change and yesterday's price change are not independent. O C. Do not reject Ho. There is sufficient evidence to conclude that today's price change and yesterday's price change are not independent. O D. Do not reject Ho. There is insufficient evidence to conclude that today's price change and yesterday's price change are not independent.

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Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products. 

Speed, Time, and Distance

Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.

Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.