Mathematics, 24.03.2021 23:20 jhosami46311
In aâ study, researchers wanted to measure the effect of alcohol on the hippocampalâ region, the portion of the brain responsible forâ long-term memoryâ storage, in adolescents. The researchers randomly selected 24 adolescents with alcohol use disorders to determine whether the hippocampal volumes in the alcoholic adolescents were less than the normal volume of 9.02 cm3. An analysis of the sample data revealed that the hippocampal volume is approximately normal with x = 8.07 cm3 and s = 0.8 cm3. Conduct the appropriate test at the level of significance.
1. State the null and alternative hypotheses.
2. Identify the t-statistic.
3. Identify the P-value.
4. Make a conclusion regarding the hypothesis.
Answers: 1
Mathematics, 21.06.2019 18:30, jamilecalderonpalaci
Solve 2x2 + 8 = 0 by graphing the related function. there are two solutions: . there are no real number solutions. there are two solutions: 2 and -2
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Mathematics, 21.06.2019 19:30, ray2220
The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)
Answers: 3
Mathematics, 21.06.2019 22:30, hala201490
Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.
Answers: 1
Mathematics, 21.06.2019 23:30, kathlynskare06
Side xy of triangle xyz is extended to point w, creating a linear pair with ∠wyz and ∠xyz. measure of an exterior angle what is the value of x? 64 80 100 180
Answers: 2
In aâ study, researchers wanted to measure the effect of alcohol on the hippocampalâ region, the por...
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