Boyd Garza
07/18/2024 · Junior High School
According to a reputable magazine, \( 31 \% \) of all cars sold in a certain country are SUVs. Suppose a random sample of 500 recently sold cars shows that 140 are SUVs. Complete parts (a) and (b) below. a. Write the null and alternative hypotheses to test that fewer than \( 31 \% \) of cars sold are SUVs. \( \mathrm{H}_{0}: \mathrm{p}=0.31 \) \( \mathrm{H}_{\mathrm{a}}: \mathrm{p}<0.31 \) (Type integers or decimals. Do not round.) b. Report the value of the test statistic (z) from the figure. \( \mathrm{z}=\square \) (Type an integer or a decimal. Round to four decimal places as needed.)
UpStudy ThothAI Solution
Tutor-Verified Answer
Quick Answer
(a) Null hypothesis: \( p = 0.31 \), Alternative hypothesis: \( p < 0.31 \)
(b) Test statistic \( z \approx -1.4469 \)
Step-by-step Solution
Answered by UpStudy AI and reviewed by a Professional Tutor
UpStudy ThothAI
Self-Developed and Ever-Improving
Thoth AI product is constantly being upgraded and optimized.
Covers All Major Subjects
Capable of handling homework in math, chemistry, biology, physics, and more.
Instant and Accurate
Provides immediate and precise solutions and guidance.
Try Now
Ask Tutors
Ask AI
10x
Fastest way to Get Answers & Solutions
By text
Enter your question here…
By image
Re-Upload
Submit