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Upon treatment with heat or chemicals, bacteria will _______________________.

Exam Question 4 IQ is normally distributed with a mean of 110 points and a standard deviation of 13 points. Kelso’s IQ is 2.1 standard deviations below the mean. What is Kelso’s IQ? Is it unusual? Explain how and why or why not. Find the proportion of people with an IQ of at least 120. Write probability notation in your answer and write the desmos function you used to do the calculation. Round Z-scores to two decimal places. Round your answer to three decimal places. Alfred wants to know the IQ’s of the people who encompass the middle 80% of the population. His solution is below. Describe two errors he made and explain to him how to fix them. Lower limit is and the upper limit is .  So 80% of all IQ’s are between 25.8 points and 194.2 points.

Prof Rea’s Exam Question 2. A restaurant is deciding which farm to order berries from for a seasonal dessert on their menu. The average cost for a pound of berries in California is $2.82 with a population standard deviation of $0.45. Assume that berry cost in California is normally distributed. Suppose that farms in California sell 10 different kinds of berries.  Explain why the sampling distribution of sample means is approximately normal.  Compute the mean,

Prof Rea’s Exam Question 6. A scientist takes a swab for a patient to determine if they are sick with Strep. The scientist’s null hypothesis is given as follows:  : The patient has no indication that there is any bacteria present in the culture and can therefore be deemed healthy. Describe the type II error that could occur in context.

Exam Question 10 Let  represent the Covid vaccination rate in Rancho Cucamonga. The null and alternative hypotheses are , . Given this information, write the claim being tested. Sandy tests the claim and finds the P-value to be 0.03. Write the conclusion in plain language if the level of significance is 1%.

Prof Rea’s Exam Question 4. Show as much work as possible and clearly show all four steps of a hypothesis test to earn credit: Last year, researchers determined that adults in the US spent an average of 152 minutes on social media per day. You wonder if the amount of time people have been spending on social media has increased since last year. You randomly survey 120 adults in the US and find that they spend an average of 145 minutes on social media per day. You compute the sample standard deviation to be 35 minutes. Test your claim using a 5% level of significance. Round all calculated values to three decimal places.

Exam Question 4 IQ is normally distributed with a mean of 110 points and a standard deviation of 13 points. Einstein’s IQ is 3.8 standard deviations above the mean. What is Einstein’s IQ? Is it unusual? Explain how and why or why not. Find the proportion of people with an IQ of at most 130. Write probability notation in your answer and write the desmos function you used to do the calculation. Round Z-scores to two decimal places. Round your answer to three decimal places. Alfred wants to know the IQ’s of the people who encompass the middle 60% of the population. His solution is below. Describe two errors he made and explain to him how to fix them.

Which of the following cell release histamines and involves in the inflammatory response?

Which of the following cell is involved in resistance to parasitic helminths?

An injection of “naked” DNA into muscle cells to induce an immune response against the proteins encoded by the DNA is an example of a subunit vaccine.