Retaking the SAT. An SRS of 400 high school seniors gained an average of x = 9 points in their second attempt at the SAT Mathematics exam. Assume that the change in score has a Normal distribution with standard deviation o = 40. We want to estimate the mean change in score u in the population of all high school seniors. %3D a) Give a 95% confidence interval for based on this sample. b) Based on your confidence interval in part (a), how certain are you the mean change in score u in the population of all high school seniors is greater than 0? [Hint: Does the interval in part (a) include 0?] that
Quadratic Equation
When it comes to the concept of polynomial equations, quadratic equations can be said to be a special case. What does solving a quadratic equation mean? We will understand the quadratics and their types once we are familiar with the polynomial equations and their types.
Demand and Supply Function
The concept of demand and supply is important for various factors. One of them is studying and evaluating the condition of an economy within a given period of time. The analysis or evaluation of the demand side factors are important for the suppliers to understand the consumer behavior. The evaluation of supply side factors is important for the consumers in order to understand that what kind of combination of goods or what kind of goods and services he or she should consume in order to maximize his utility and minimize the cost. Therefore, in microeconomics both of these concepts are extremely important in order to have an idea that what exactly is going on in the economy.
needs to be done by the calculator method please ti83 or 84
![16.2 Retaking the SAT. An SRS of 400 high school seniors gained an average of
x = 9 points in their second attempt at the SAT Mathematics exam. Assume
that the change in score has a Normal distribution with standard deviation
o = 40. We want to estimate the mean change in score u in the population of
all high school seniors.
(a) Give a 95% confidence interval for u based on this sample.
(b) Based on your confidence interval in part (a), how certain are you
that
the mean change in score u in the population of all high school seniors is
greater than 0? [Hint: Does the interval in part (a) include 0?]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F754ba9cb-05fb-45a9-858f-cfd568f02df7%2F38d2af22-c567-41f9-ab59-4471c4620d0a%2F87vqbcr_processed.jpeg&w=3840&q=75)
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